From 8e30c6b0d199d1d78438a87c95cc5bc1d18cbcb0 Mon Sep 17 00:00:00 2001 From: John Terpstra Date: Sat, 14 Jun 2003 22:18:16 +0000 Subject: Updating html stuff. (This used to be commit ab1f2fe4a840c9603bf5da5c133c137542fe0319) --- docs/htmldocs/smb.conf.5.html | 2880 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 2878 insertions(+), 2 deletions(-) (limited to 'docs/htmldocs/smb.conf.5.html') diff --git a/docs/htmldocs/smb.conf.5.html b/docs/htmldocs/smb.conf.5.html index c154347a86..9c01b5de56 100644 --- a/docs/htmldocs/smb.conf.5.html +++ b/docs/htmldocs/smb.conf.5.html @@ -244,8 +244,2884 @@ alias|alias|alias|alias... connection is made as the username given in the "guest account =" for the service, irrespective of the supplied password.

COMPLETE LIST OF GLOBAL PARAMETERS

Here is a list of all global parameters. See the section of - each parameter for details. Note that some are synonyms.

    COMPLETE LIST OF SERVICE PARAMETERS

    Here is a list of all service parameters. See the section on - each parameter for details. Note that some are synonyms.

      EXPLANATION OF EACH PARAMETER

      WARNINGS

      Although the configuration file permits service names + each parameter for details. Note that some are synonyms.

      COMPLETE LIST OF SERVICE PARAMETERS

      Here is a list of all service parameters. See the section on + each parameter for details. Note that some are synonyms.

      EXPLANATION OF EACH PARAMETER

      abort shutdown script (G)

      This parameter only exists in the HEAD cvs branch + This a full path name to a script called by smbd(8) that + should stop a shutdown procedure issued by the + shutdown script.

      This command will be run as user.

      Default: None.

      Example: abort shutdown script = /sbin/shutdown -c

      add group script (G)

      This is the full pathname to a script that will be run + AS ROOT by smbd(8) + when a new group is requested. It will expand any %g to the group name passed. This + script is only useful for installations using the Windows NT + domain administration tools. The script is free to create a + group with an arbitrary name to circumvent unix group name + restrictions. In that case the script must print the numeric gid + of the created group on stdout.

      add machine script (G)

      This is the full pathname to a script that will be run by + smbd(8) when a machine is added + to it's domain using the administrator username and password + method.

      This option is only required when using sam back-ends tied + to the Unix uid method of RID calculation such as smbpasswd. + This option is only available in Samba 3.0.

      Default: add machine script = <empty string>

      Example: add machine script = /usr/sbin/adduser -n -g + machines -c Machine -d /dev/null -s /bin/false %u

      addprinter command (G)

      With the introduction of MS-RPC based printing + support for Windows NT/2000 clients in Samba 2.2, The MS Add + Printer Wizard (APW) icon is now also available in the + "Printers..." folder displayed a share listing. The APW + allows for printers to be add remotely to a Samba or Windows + NT/2000 print server.

      For a Samba host this means that the printer must be + physically added to the underlying printing system. The add + printer command defines a script to be run which + will perform the necessary operations for adding the printer + to the print system and to add the appropriate service definition + to the smb.conf file in order that it can be + shared by smbd(8).

      The addprinter command is + automatically invoked with the following parameter (in + order):

      • printer name

      • share name

      • port name

      • driver name

      • location

      • Windows 9x driver location

      All parameters are filled in from the PRINTER_INFO_2 structure sent + by the Windows NT/2000 client with one exception. The "Windows 9x + driver location" parameter is included for backwards compatibility + only. The remaining fields in the structure are generated from answers + to the APW questions.

      Once the addprinter command has + been executed, smbd will reparse the + smb.conf to determine if the share defined by the APW + exists. If the sharename is still invalid, then smbd + will return an ACCESS_DENIED error to the client.

      + The "add printer command" program can output a single line of text, + which Samba will set as the port the new printer is connected to. + If this line isn't output, Samba won't reload its printer shares. +

      See also + deleteprinter command, + printing, + show add + printer wizard

      Default: none

      Example: addprinter command = /usr/bin/addprinter

      add share command (G)

      Samba 2.2.0 introduced the ability to dynamically + add and delete shares via the Windows NT 4.0 Server Manager. The + add share command is used to define an + external program or script which will add a new service definition + to smb.conf. In order to successfully + execute the add share command, smbd + requires that the administrator be connected using a root account (i.e. + uid == 0). +

      + When executed, smbd will automatically invoke the + add share command with four parameters. +

      • configFile - the location + of the global smb.conf file. +

      • shareName - the name of the new + share. +

      • pathName - path to an **existing** + directory on disk. +

      • comment - comment string to associate + with the new share. +

      + This parameter is only used for add file shares. To add printer shares, + see the addprinter + command. +

      + See also change share + command, delete share + command. +

      Default: none

      Example: add share command = /usr/local/bin/addshare

      add user script (G)

      This is the full pathname to a script that will + be run AS ROOT by smbd(8) under special circumstances described below.

      Normally, a Samba server requires that UNIX users are + created for all users accessing files on this server. For sites + that use Windows NT account databases as their primary user database + creating these users and keeping the user list in sync with the + Windows NT PDC is an onerous task. This option allows smbd to create the required UNIX users + ON DEMAND when a user accesses the Samba server.

      In order to use this option, smbd(8) must NOT be set to security = share + and add user script + must be set to a full pathname for a script that will create a UNIX + user given one argument of %u, which expands into + the UNIX user name to create.

      When the Windows user attempts to access the Samba server, + at login (session setup in the SMB protocol) time, smbd(8) contacts the password server and + attempts to authenticate the given user with the given password. If the + authentication succeeds then smbd + attempts to find a UNIX user in the UNIX password database to map the + Windows user into. If this lookup fails, and add user script + is set then smbd will + call the specified script AS ROOT, expanding + any %u argument to be the user name to create.

      If this script successfully creates the user then smbd + will continue on as though the UNIX user + already existed. In this way, UNIX users are dynamically created to + match existing Windows NT accounts.

      See also + security, + password server, + delete user + script.

      Default: add user script = <empty string>

      Example: add user script = /usr/local/samba/bin/add_user %u

      add user to group script (G)

      Full path to the script that will be called when + a user is added to a group using the Windows NT domain administration + tools. It will be run by smbd(8) AS ROOT. + Any %g will be replaced with the group name and + any %u will be replaced with the user name. +

      Default: add user to group script =

      Example: add user to group script = /usr/sbin/adduser %u %g

      admin users (S)

      This is a list of users who will be granted + administrative privileges on the share. This means that they + will do all file operations as the super-user (root).

      You should use this option very carefully, as any user in + this list will be able to do anything they like on the share, + irrespective of file permissions.

      Default: no admin users

      Example: admin users = jason

      ads server (G)

      If this option is specified, samba does not try to figure out what + ads server to use itself, but uses the specified ads server. Either one + DNS name or IP address can be used.

      Default: ads server =

      Example: ads server = 192.168.1.2

      algorithmic rid base (G)

      This determines how Samba will use its + algorithmic mapping from uids/gid to the RIDs needed to construct + NT Security Identifiers. +

      Setting this option to a larger value could be useful to sites + transitioning from WinNT and Win2k, as existing user and + group rids would otherwise clash with sytem users etc. +

      All UIDs and GIDs must be able to be resolved into SIDs for + the correct operation of ACLs on the server. As such the algorithmic + mapping can't be 'turned off', but pushing it 'out of the way' should + resolve the issues. Users and groups can then be assigned 'low' RIDs + in arbitary-rid supporting backends. +

      Default: algorithmic rid base = 1000

      Example: algorithmic rid base = 100000

      allow hosts (S)

      Synonym for + hosts allow.

      allow trusted domains (G)

      This option only takes effect when the + security option is set to + server or domain. + If it is set to no, then attempts to connect to a resource from + a domain or workgroup other than the one which smbd is running + in will fail, even if that domain is trusted by the remote server + doing the authentication.

      This is useful if you only want your Samba server to + serve resources to users in the domain it is a member of. As + an example, suppose that there are two domains DOMA and DOMB. DOMB + is trusted by DOMA, which contains the Samba server. Under normal + circumstances, a user with an account in DOMB can then access the + resources of a UNIX account with the same account name on the + Samba server even if they do not have an account in DOMA. This + can make implementing a security boundary difficult.

      Default: allow trusted domains = yes

      announce as (G)

      This specifies what type of server nmbd(8) will announce itself as, to a network neighborhood browse + list. By default this is set to Windows NT. The valid options + are : "NT Server" (which can also be written as "NT"), + "NT Workstation", "Win95" or "WfW" meaning Windows NT Server, + Windows NT Workstation, Windows 95 and Windows for Workgroups + respectively. Do not change this parameter unless you have a + specific need to stop Samba appearing as an NT server as this + may prevent Samba servers from participating as browser servers + correctly.

      Default: announce as = NT Server

      Example: announce as = Win95

      announce version (G)

      This specifies the major and minor version numbers + that nmbd will use when announcing itself as a server. The default + is 4.9. Do not change this parameter unless you have a specific + need to set a Samba server to be a downlevel server.

      Default: announce version = 4.9

      Example: announce version = 2.0

      auth methods (G)

      This option allows the administrator to chose what + authentication methods smbd will use when authenticating + a user. This option defaults to sensible values based on + security.

      Each entry in the list attempts to authenticate the user in turn, until + the user authenticates. In practice only one method will ever actually + be able to complete the authentication. +

      Default: auth methods = <empty string>

      Example: auth methods = guest sam ntdomain

      auto services (G)

      This is a synonym for the + preload.

      available (S)

      This parameter lets you "turn off" a service. If + available = no, then ALL + attempts to connect to the service will fail. Such failures are + logged.

      Default: available = yes

      bind interfaces only (G)

      This global parameter allows the Samba admin + to limit what interfaces on a machine will serve SMB requests. It + affects file service smbd(8) and name service nmbd(8) in a slightly different ways.

      For name service it causes nmbd to bind + to ports 137 and 138 on the interfaces listed in + the interfaces parameter. nmbd also + binds to the "all addresses" interface (0.0.0.0) + on ports 137 and 138 for the purposes of reading broadcast messages. + If this option is not set then nmbd will service + name requests on all of these sockets. If bind interfaces + only is set then nmbd will check the + source address of any packets coming in on the broadcast sockets + and discard any that don't match the broadcast addresses of the + interfaces in the interfaces parameter list. + As unicast packets are received on the other sockets it allows + nmbd to refuse to serve names to machines that + send packets that arrive through any interfaces not listed in the + interfaces list. IP Source address spoofing + does defeat this simple check, however, so it must not be used + seriously as a security feature for nmbd.

      For file service it causes smbd(8) to bind only to the interface list + given in the interfaces parameter. This + restricts the networks that smbd will serve + to packets coming in those interfaces. Note that you should not use this parameter + for machines that are serving PPP or other intermittent or non-broadcast network + interfaces as it will not cope with non-permanent interfaces.

      If bind interfaces only is set then + unless the network address 127.0.0.1 is added + to the interfaces parameter + list smbpasswd(8) and swat(8) may not work as expected due + to the reasons covered below.

      To change a users SMB password, the smbpasswd + by default connects to the localhost - 127.0.0.1 + address as an SMB client to issue the password change request. If + bind interfaces only is set then unless the + network address 127.0.0.1 is added to the + interfaces parameter list then + smbpasswd will fail to connect in it's default mode. + smbpasswd can be forced to use the primary IP interface + of the local host by using its smbpasswd(8) -r remote machine + parameter, with remote machine set + to the IP name of the primary interface of the local host.

      The swat status page tries to connect with + smbd and nmbd at the address + 127.0.0.1 to determine if they are running. + Not adding 127.0.0.1 will cause + smbd and nmbd to always show + "not running" even if they really are. This can prevent + swat from starting/stopping/restarting smbd + and nmbd.

      Default: bind interfaces only = no

      blocking locks (S)

      This parameter controls the behavior + of smbd(8) when given a request by a client + to obtain a byte range lock on a region of an open file, and the + request has a time limit associated with it.

      If this parameter is set and the lock range requested + cannot be immediately satisfied, samba will internally + queue the lock request, and periodically attempt to obtain + the lock until the timeout period expires.

      If this parameter is set to no, then + samba will behave as previous versions of Samba would and + will fail the lock request immediately if the lock range + cannot be obtained.

      Default: blocking locks = yes

      block size (S)

      This parameter controls the behavior of smbd(8) when reporting disk free + sizes. By default, this reports a disk block size of 1024 bytes. +

      Changing this parameter may have some effect on the + efficiency of client writes, this is not yet confirmed. This + parameter was added to allow advanced administrators to change + it (usually to a higher value) and test the effect it has on + client write performance without re-compiling the code. As this + is an experimental option it may be removed in a future release. +

      Changing this option does not change the disk free reporting + size, just the block size unit reported to the client. +

      browsable (S)

      See the + browseable.

      browseable (S)

      This controls whether this share is seen in + the list of available shares in a net view and in the browse list.

      Default: browseable = yes

      browse list (G)

      This controls whether smbd(8) will serve a browse list to + a client doing a NetServerEnum call. Normally + set to yes. You should never need to change + this.

      Default: browse list = yes

      case sensitive (S)

      See the discussion in the section NAME MANGLING.

      Default: case sensitive = no

      casesignames (S)

      Synonym for case sensitive.

      change notify timeout (G)

      This SMB allows a client to tell a server to + "watch" a particular directory for any changes and only reply to + the SMB request when a change has occurred. Such constant scanning of + a directory is expensive under UNIX, hence an smbd(8) daemon only performs such a scan + on each requested directory once every change notify + timeout seconds.

      Default: change notify timeout = 60

      Example: change notify timeout = 300

      Would change the scan time to every 5 minutes.

      change share command (G)

      Samba 2.2.0 introduced the ability to dynamically + add and delete shares via the Windows NT 4.0 Server Manager. The + change share command is used to define an + external program or script which will modify an existing service definition + in smb.conf. In order to successfully + execute the change share command, smbd + requires that the administrator be connected using a root account (i.e. + uid == 0). +

      + When executed, smbd will automatically invoke the + change share command with four parameters. +

      • configFile - the location + of the global smb.conf file. +

      • shareName - the name of the new + share. +

      • pathName - path to an **existing** + directory on disk. +

      • comment - comment string to associate + with the new share. +

      + This parameter is only used modify existing file shares definitions. To modify + printer shares, use the "Printers..." folder as seen when browsing the Samba host. +

      + See also add share + command, delete + share command. +

      Default: none

      Example: change share command = /usr/local/bin/addshare

      comment (S)

      This is a text field that is seen next to a share + when a client does a queries the server, either via the network + neighborhood or via net view to list what shares + are available.

      If you want to set the string that is displayed next to the + machine name then see the + server string parameter.

      Default: No comment string

      Example: comment = Fred's Files

      config file (G)

      This allows you to override the config file + to use, instead of the default (usually smb.conf). + There is a chicken and egg problem here as this option is set + in the config file!

      For this reason, if the name of the config file has changed + when the parameters are loaded then it will reload them from + the new config file.

      This option takes the usual substitutions, which can + be very useful.

      If the config file doesn't exist then it won't be loaded + (allowing you to special case the config files of just a few + clients).

      Example: config file = /usr/local/samba/lib/smb.conf.%m

      copy (S)

      This parameter allows you to "clone" service + entries. The specified service is simply duplicated under the + current service's name. Any parameters specified in the current + section will override those in the section being copied.

      This feature lets you set up a 'template' service and + create similar services easily. Note that the service being + copied must occur earlier in the configuration file than the + service doing the copying.

      Default: no value

      Example: copy = otherservice

      create mask (S)

      A synonym for this parameter is + create mode + .

      When a file is created, the necessary permissions are + calculated according to the mapping from DOS modes to UNIX + permissions, and the resulting UNIX mode is then bit-wise 'AND'ed + with this parameter. This parameter may be thought of as a bit-wise + MASK for the UNIX modes of a file. Any bit not + set here will be removed from the modes set on a file when it is + created.

      The default value of this parameter removes the + 'group' and 'other' write and execute bits from the UNIX modes.

      Following this Samba will bit-wise 'OR' the UNIX mode created + from this parameter with the value of the + force create mode + parameter which is set to 000 by default.

      This parameter does not affect directory modes. See the + parameter directory mode + for details.

      See also the force + create mode parameter for forcing particular mode + bits to be set on created files. See also the + directory mode parameter for masking + mode bits on created directories. See also the + inherit permissions parameter.

      Note that this parameter does not apply to permissions + set by Windows NT/2000 ACL editors. If the administrator wishes to enforce + a mask on access control lists also, they need to set the + security mask.

      Default: create mask = 0744

      Example: create mask = 0775

      create mode (S)

      This is a synonym for + create mask.

      csc policy (S)

      This stands for client-side caching + policy, and specifies how clients capable of offline + caching will cache the files in the share. The valid values + are: manual, documents, programs, disable.

      These values correspond to those used on Windows servers.

      For example, shares containing roaming profiles can have + offline caching disabled using csc policy = disable.

      Default: csc policy = manual

      Example: csc policy = programs

      dead time (G)

      The value of the parameter (a decimal integer) + represents the number of minutes of inactivity before a connection + is considered dead, and it is disconnected. The deadtime only takes + effect if the number of open files is zero.

      This is useful to stop a server's resources being + exhausted by a large number of inactive connections.

      Most clients have an auto-reconnect feature when a + connection is broken so in most cases this parameter should be + transparent to users.

      Using this parameter with a timeout of a few minutes + is recommended for most systems.

      A deadtime of zero indicates that no auto-disconnection + should be performed.

      Default: deadtime = 0

      Example: deadtime = 15

      debug hires timestamp (G)

      Sometimes the timestamps in the log messages + are needed with a resolution of higher that seconds, this + boolean parameter adds microsecond resolution to the timestamp + message header when turned on.

      Note that the parameter + debug timestamp must be on for this to have an + effect.

      Default: debug hires timestamp = no

      debug level (G)

      Synonym for + log level.

      debug pid (G)

      When using only one log file for more then one forked + smbd(8)-process there may be hard to + follow which process outputs which message. This boolean parameter + is adds the process-id to the timestamp message headers in the + logfile when turned on.

      Note that the parameter + debug timestamp must be on for this to have an + effect.

      Default: debug pid = no

      debug timestamp (G)

      Samba debug log messages are timestamped + by default. If you are running at a high + debug level these timestamps + can be distracting. This boolean parameter allows timestamping + to be turned off.

      Default: debug timestamp = yes

      debug uid (G)

      Samba is sometimes run as root and sometime + run as the connected user, this boolean parameter inserts the + current euid, egid, uid and gid to the timestamp message headers + in the log file if turned on.

      Note that the parameter + debug timestamp must be on for this to have an + effect.

      Default: debug uid = no

      default (G)

      A synonym for + default service.

      default case (S)

      See the section on + NAME MANGLING. Also note the + short preserve case parameter.

      Default: default case = lower

      default devmode (S)

      This parameter is only applicable to printable services. + When smbd is serving Printer Drivers to Windows NT/2k/XP clients, each printer on the Samba + server has a Device Mode which defines things such as paper size and + orientation and duplex settings. The device mode can only correctly be + generated by the printer driver itself (which can only be executed on a + Win32 platform). Because smbd is unable to execute the driver code + to generate the device mode, the default behavior is to set this field + to NULL. +

      Most problems with serving printer drivers to Windows NT/2k/XP clients + can be traced to a problem with the generated device mode. Certain drivers + will do things such as crashing the client's Explorer.exe with a NULL devmode. + However, other printer drivers can cause the client's spooler service + (spoolsv.exe) to die if the devmode was not created by the driver itself + (i.e. smbd generates a default devmode). +

      This parameter should be used with care and tested with the printer + driver in question. It is better to leave the device mode to NULL + and let the Windows client set the correct values. Because drivers do not + do this all the time, setting default devmode = yes + will instruct smbd to generate a default one. +

      For more information on Windows NT/2k printing and Device Modes, + see the MSDN documentation. +

      Default: default devmode = no

      default service (G)

      This parameter specifies the name of a service + which will be connected to if the service actually requested cannot + be found. Note that the square brackets are NOT + given in the parameter value (see example below).

      There is no default value for this parameter. If this + parameter is not given, attempting to connect to a nonexistent + service results in an error.

      Typically the default service would be a + guest ok, + read-only service.

      Also note that the apparent service name will be changed + to equal that of the requested service, this is very useful as it + allows you to use macros like %S to make + a wildcard service.

      Note also that any "_" characters in the name of the service + used in the default service will get mapped to a "/". This allows for + interesting things.

      Example:

      +[global]
+	default service = pub
+        
+[pub]
+	path = /%S
+
      delete group script (G)

      This is the full pathname to a script that will + be run AS ROOT smbd(8) when a group is requested to be deleted. + It will expand any %g to the group name passed. + This script is only useful for installations using the Windows NT domain administration tools. +

      deleteprinter command (G)

      With the introduction of MS-RPC based printer + support for Windows NT/2000 clients in Samba 2.2, it is now + possible to delete printer at run time by issuing the + DeletePrinter() RPC call.

      For a Samba host this means that the printer must be + physically deleted from underlying printing system. The + deleteprinter command defines a script to be run which + will perform the necessary operations for removing the printer + from the print system and from smb.conf. +

      The deleteprinter command is + automatically called with only one parameter: + "printer name".

      Once the deleteprinter command has + been executed, smbd will reparse the + smb.conf to associated printer no longer exists. + If the sharename is still valid, then smbd + will return an ACCESS_DENIED error to the client.

      See also + addprinter command, + printing, + show add + printer wizard

      Default: none

      Example: deleteprinter command = /usr/bin/removeprinter

      delete readonly (S)

      This parameter allows readonly files to be deleted. + This is not normal DOS semantics, but is allowed by UNIX.

      This option may be useful for running applications such + as rcs, where UNIX file ownership prevents changing file + permissions, and DOS semantics prevent deletion of a read only file.

      Default: delete readonly = no

      delete share command (G)

      Samba 2.2.0 introduced the ability to dynamically + add and delete shares via the Windows NT 4.0 Server Manager. The + delete share command is used to define an + external program or script which will remove an existing service + definition from smb.conf. In order to successfully + execute the delete share command, smbd + requires that the administrator be connected using a root account (i.e. + uid == 0). +

      + When executed, smbd will automatically invoke the + delete share command with two parameters. +

      • configFile - the location + of the global smb.conf file. +

      • shareName - the name of + the existing service. +

      + This parameter is only used to remove file shares. To delete printer shares, + see the deleteprinter + command. +

      + See also add share + command, change + share command. +

      Default: none

      Example: delete share command = /usr/local/bin/delshare

      delete user from group script (G)

      Full path to the script that will be called when + a user is removed from a group using the Windows NT domain administration + tools. It will be run by smbd(8) AS ROOT. + Any %g will be replaced with the group name and + any %u will be replaced with the user name. +

      Default: delete user from group script =

      Example: delete user from group script = /usr/sbin/deluser %u %g

      delete user script (G)

      This is the full pathname to a script that will + be run by smbd(8) when managing users + with remote RPC (NT) tools. +

      This script is called when a remote client removes a user + from the server, normally using 'User Manager for Domains' or + rpcclient.

      This script should delete the given UNIX username.

      Default: delete user script = <empty string>

      Example: delete user script = /usr/local/samba/bin/del_user %u

      delete veto files (S)

      This option is used when Samba is attempting to + delete a directory that contains one or more vetoed directories + (see the veto files + option). If this option is set to no (the default) then if a vetoed + directory contains any non-vetoed files or directories then the + directory delete will fail. This is usually what you want.

      If this option is set to yes, then Samba + will attempt to recursively delete any files and directories within + the vetoed directory. This can be useful for integration with file + serving systems such as NetAtalk which create meta-files within + directories you might normally veto DOS/Windows users from seeing + (e.g. .AppleDouble)

      Setting delete veto files = yes allows these + directories to be transparently deleted when the parent directory + is deleted (so long as the user has permissions to do so).

      See also the veto + files parameter.

      Default: delete veto files = no

      deny hosts (S)

      Synonym for hosts + deny.

      dfree command (G)

      The dfree command setting + should only be used on systems where a problem occurs with the + internal disk space calculations. This has been known to happen + with Ultrix, but may occur with other operating systems. The + symptom that was seen was an error of "Abort Retry + Ignore" at the end of each directory listing.

      This setting allows the replacement of the internal routines to + calculate the total disk space and amount available with an external + routine. The example below gives a possible script that might fulfill + this function.

      The external program will be passed a single parameter indicating + a directory in the filesystem being queried. This will typically consist + of the string ./. The script should return two + integers in ASCII. The first should be the total disk space in blocks, + and the second should be the number of available blocks. An optional + third return value can give the block size in bytes. The default + blocksize is 1024 bytes.

      Note: Your script should NOT be setuid or + setgid and should be owned by (and writeable only by) root!

      Default: By default internal routines for + determining the disk capacity and remaining space will be used. +

      Example: dfree command = /usr/local/samba/bin/dfree

      Where the script dfree (which must be made executable) could be:

       
+#!/bin/sh
+df $1 | tail -1 | awk '{print $2" "$4}'
+

      or perhaps (on Sys V based systems):

       
+#!/bin/sh
+/usr/bin/df -k $1 | tail -1 | awk '{print $3" "$5}'
+

      Note that you may have to replace the command names with full path names on some systems.

      directory (S)

      Synonym for path.

      directory mask (S)

      This parameter is the octal modes which are + used when converting DOS modes to UNIX modes when creating UNIX + directories.

      When a directory is created, the necessary permissions are + calculated according to the mapping from DOS modes to UNIX permissions, + and the resulting UNIX mode is then bit-wise 'AND'ed with this + parameter. This parameter may be thought of as a bit-wise MASK for + the UNIX modes of a directory. Any bit not set + here will be removed from the modes set on a directory when it is + created.

      The default value of this parameter removes the 'group' + and 'other' write bits from the UNIX mode, allowing only the + user who owns the directory to modify it.

      Following this Samba will bit-wise 'OR' the UNIX mode + created from this parameter with the value of the + force directory mode parameter. + This parameter is set to 000 by default (i.e. no extra mode bits are added).

      Note that this parameter does not apply to permissions + set by Windows NT/2000 ACL editors. If the administrator wishes to enforce + a mask on access control lists also, they need to set the + directory security mask.

      See the force + directory mode parameter to cause particular mode + bits to always be set on created directories.

      See also the create mode + parameter for masking mode bits on created files, + and the directory + security mask parameter.

      Also refer to the + inherit permissions parameter.

      Default: directory mask = 0755

      Example: directory mask = 0775

      directory mode (S)

      Synonym for + directory mask

      directory security mask (S)

      This parameter controls what UNIX permission bits + can be modified when a Windows NT client is manipulating the UNIX + permission on a directory using the native NT security dialog + box.

      This parameter is applied as a mask (AND'ed with) to + the changed permission bits, thus preventing any bits not in + this mask from being modified. Essentially, zero bits in this + mask may be treated as a set of bits the user is not allowed + to change.

      If not set explicitly this parameter is set to 0777 + meaning a user is allowed to modify all the user/group/world + permissions on a directory.

      Note that users who can access the + Samba server through other means can easily bypass this restriction, + so it is primarily useful for standalone "appliance" systems. + Administrators of most normal systems will probably want to leave + it as the default of 0777.

      See also the + force directory security mode, + security mask, + force security mode + parameters.

      Default: directory security mask = 0777

      Example: directory security mask = 0700

      disable netbios (G)

      Enabling this parameter will disable netbios support + in Samba. Netbios is the only available form of browsing in + all windows versions except for 2000 and XP.

      Note

      Note that clients that only support netbios won't be able to + see your samba server when netbios support is disabled. +

      Default: disable netbios = no

      Example: disable netbios = yes

      disable spoolss (G)

      Enabling this parameter will disable Samba's support + for the SPOOLSS set of MS-RPC's and will yield identical behavior + as Samba 2.0.x. Windows NT/2000 clients will downgrade to using + Lanman style printing commands. Windows 9x/ME will be uneffected by + the parameter. However, this will also disable the ability to upload + printer drivers to a Samba server via the Windows NT Add Printer + Wizard or by using the NT printer properties dialog window. It will + also disable the capability of Windows NT/2000 clients to download + print drivers from the Samba host upon demand. + Be very careful about enabling this parameter. +

      See also use client driver +

      Default : disable spoolss = no

      display charset (G)

      Specifies the charset that samba will use + to print messages to stdout and stderr and SWAT will use. + Should generally be the same as the unix charset. +

      Default: display charset = ASCII

      Example: display charset = UTF8

      dns proxy (G)

      Specifies that nmbd(8) when acting as a WINS server and + finding that a NetBIOS name has not been registered, should treat the + NetBIOS name word-for-word as a DNS name and do a lookup with the DNS server + for that name on behalf of the name-querying client.

      Note that the maximum length for a NetBIOS name is 15 + characters, so the DNS name (or DNS alias) can likewise only be + 15 characters, maximum.

      nmbd spawns a second copy of itself to do the + DNS name lookup requests, as doing a name lookup is a blocking + action.

      See also the parameter + wins support.

      Default: dns proxy = yes

      domain logons (G)

      If set to yes, the Samba server will serve + Windows 95/98 Domain logons for the + workgroup it is in. Samba 2.2 + has limited capability to act as a domain controller for Windows + NT 4 Domains. For more details on setting up this feature see + the Samba-PDC-HOWTO included in the Samba documentation.

      Default: domain logons = no

      domain master (G)

      Tell smbd(8) to enable WAN-wide browse list + collation. Setting this option causes nmbd to + claim a special domain specific NetBIOS name that identifies + it as a domain master browser for its given + workgroup. Local master browsers + in the same workgroup on broadcast-isolated + subnets will give this nmbd their local browse lists, + and then ask smbd(8) for a complete copy of the browse + list for the whole wide area network. Browser clients will then contact + their local master browser, and will receive the domain-wide browse list, + instead of just the list for their broadcast-isolated subnet.

      Note that Windows NT Primary Domain Controllers expect to be + able to claim this workgroup specific special + NetBIOS name that identifies them as domain master browsers for + that workgroup by default (i.e. there is no + way to prevent a Windows NT PDC from attempting to do this). This + means that if this parameter is set and nmbd claims + the special name for a workgroup before a Windows + NT PDC is able to do so then cross subnet browsing will behave + strangely and may fail.

      If domain logons = yes + , then the default behavior is to enable the domain + master parameter. If domain logons is + not enabled (the default setting), then neither will domain + master be enabled by default.

      Default: domain master = auto

      dont descend (S)

      There are certain directories on some systems + (e.g., the /proc tree under Linux) that are either not + of interest to clients or are infinitely deep (recursive). This + parameter allows you to specify a comma-delimited list of directories + that the server should always show as empty.

      Note that Samba can be very fussy about the exact format + of the "dont descend" entries. For example you may need + ./proc instead of just /proc. + Experimentation is the best policy :-)

      Default: none (i.e., all directories are OK + to descend)

      Example: dont descend = /proc,/dev

      dos charset (G)

      DOS SMB clients assume the server has + the same charset as they do. This option specifies which + charset Samba should talk to DOS clients. +

      The default depends on which charsets you have installed. + Samba tries to use charset 850 but falls back to ASCII in + case it is not available. Run testparm(1) to check the default on your system.

      dos filemode (S)

      The default behavior in Samba is to provide + UNIX-like behavior where only the owner of a file/directory is + able to change the permissions on it. However, this behavior + is often confusing to DOS/Windows users. Enabling this parameter + allows a user who has write access to the file (by whatever + means) to modify the permissions on it. Note that a user + belonging to the group owning the file will not be allowed to + change permissions if the group is only granted read access. + Ownership of the file/directory is not changed, only the permissions + are modified.

      Default: dos filemode = no

      dos filetime resolution (S)

      Under the DOS and Windows FAT filesystem, the finest + granularity on time resolution is two seconds. Setting this parameter + for a share causes Samba to round the reported time down to the + nearest two second boundary when a query call that requires one second + resolution is made to smbd(8).

      This option is mainly used as a compatibility option for Visual + C++ when used against Samba shares. If oplocks are enabled on a + share, Visual C++ uses two different time reading calls to check if a + file has changed since it was last read. One of these calls uses a + one-second granularity, the other uses a two second granularity. As + the two second call rounds any odd second down, then if the file has a + timestamp of an odd number of seconds then the two timestamps will not + match and Visual C++ will keep reporting the file has changed. Setting + this option causes the two timestamps to match, and Visual C++ is + happy.

      Default: dos filetime resolution = no

      dos filetimes (S)

      Under DOS and Windows, if a user can write to a + file they can change the timestamp on it. Under POSIX semantics, + only the owner of the file or root may change the timestamp. By + default, Samba runs with POSIX semantics and refuses to change the + timestamp on a file if the user smbd is acting + on behalf of is not the file owner. Setting this option to + yes allows DOS semantics and smbd(8) will change the file + timestamp as DOS requires.

      Default: dos filetimes = no

      encrypt passwords (G)

      This boolean controls whether encrypted passwords + will be negotiated with the client. Note that Windows NT 4.0 SP3 and + above and also Windows 98 will by default expect encrypted passwords + unless a registry entry is changed. To use encrypted passwords in + Samba see the chapter "User Database" in the Samba HOWTO Collection.

      In order for encrypted passwords to work correctly + smbd(8) must either + have access to a local smbpasswd(5) file (see the smbpasswd(8) program for information on how to set up + and maintain this file), or set the security = [server|domain|ads] parameter which + causes smbd to authenticate against another + server.

      Default: encrypt passwords = yes

      enhanced browsing (G)

      This option enables a couple of enhancements to + cross-subnet browse propagation that have been added in Samba + but which are not standard in Microsoft implementations. +

      The first enhancement to browse propagation consists of a regular + wildcard query to a Samba WINS server for all Domain Master Browsers, + followed by a browse synchronization with each of the returned + DMBs. The second enhancement consists of a regular randomised browse + synchronization with all currently known DMBs.

      You may wish to disable this option if you have a problem with empty + workgroups not disappearing from browse lists. Due to the restrictions + of the browse protocols these enhancements can cause a empty workgroup + to stay around forever which can be annoying.

      In general you should leave this option enabled as it makes + cross-subnet browse propagation much more reliable.

      Default: enhanced browsing = yes

      enumports command (G)

      The concept of a "port" is fairly foreign + to UNIX hosts. Under Windows NT/2000 print servers, a port + is associated with a port monitor and generally takes the form of + a local port (i.e. LPT1:, COM1:, FILE:) or a remote port + (i.e. LPD Port Monitor, etc...). By default, Samba has only one + port defined--"Samba Printer Port". Under + Windows NT/2000, all printers must have a valid port name. + If you wish to have a list of ports displayed (smbd + does not use a port name for anything) other than + the default "Samba Printer Port", you + can define enumports command to point to + a program which should generate a list of ports, one per line, + to standard output. This listing will then be used in response + to the level 1 and 2 EnumPorts() RPC.

      Default: no enumports command

      Example: enumports command = /usr/bin/listports

      exec (S)

      This is a synonym for + preexec.

      fake directory create times (S)

      NTFS and Windows VFAT file systems keep a create + time for all files and directories. This is not the same as the + ctime - status change time - that Unix keeps, so Samba by default + reports the earliest of the various times Unix does keep. Setting + this parameter for a share causes Samba to always report midnight + 1-1-1980 as the create time for directories.

      This option is mainly used as a compatibility option for + Visual C++ when used against Samba shares. Visual C++ generated + makefiles have the object directory as a dependency for each object + file, and a make rule to create the directory. Also, when NMAKE + compares timestamps it uses the creation time when examining a + directory. Thus the object directory will be created if it does not + exist, but once it does exist it will always have an earlier + timestamp than the object files it contains.

      However, Unix time semantics mean that the create time + reported by Samba will be updated whenever a file is created or + or deleted in the directory. NMAKE finds all object files in + the object directory. The timestamp of the last one built is then + compared to the timestamp of the object directory. If the + directory's timestamp if newer, then all object files + will be rebuilt. Enabling this option + ensures directories always predate their contents and an NMAKE build + will proceed as expected.

      Default: fake directory create times = no

      fake oplocks (S)

      Oplocks are the way that SMB clients get permission + from a server to locally cache file operations. If a server grants + an oplock (opportunistic lock) then the client is free to assume + that it is the only one accessing the file and it will aggressively + cache file data. With some oplock types the client may even cache + file open/close operations. This can give enormous performance benefits. +

      When you set fake oplocks = yes, smbd(8) will + always grant oplock requests no matter how many clients are using the file.

      It is generally much better to use the real + oplocks support rather + than this parameter.

      If you enable this option on all read-only shares or + shares that you know will only be accessed from one client at a + time such as physically read-only media like CDROMs, you will see + a big performance improvement on many operations. If you enable + this option on shares where multiple clients may be accessing the + files read-write at the same time you can get data corruption. Use + this option carefully!

      Default: fake oplocks = no

      follow symlinks (S)

      This parameter allows the Samba administrator + to stop smbd(8) from following symbolic + links in a particular share. Setting this + parameter to no prevents any file or directory + that is a symbolic link from being followed (the user will get an + error). This option is very useful to stop users from adding a + symbolic link to /etc/passwd in their home + directory for instance. However it will slow filename lookups + down slightly.

      This option is enabled (i.e. smbd will + follow symbolic links) by default.

      Default: follow symlinks = yes

      force create mode (S)

      This parameter specifies a set of UNIX mode bit + permissions that will always be set on a + file created by Samba. This is done by bitwise 'OR'ing these bits onto + the mode bits of a file that is being created or having its + permissions changed. The default for this parameter is (in octal) + 000. The modes in this parameter are bitwise 'OR'ed onto the file + mode after the mask set in the create mask + parameter is applied.

      See also the parameter create + mask for details on masking mode bits on files.

      See also the inherit + permissions parameter.

      Default: force create mode = 000

      Example: force create mode = 0755

      would force all created files to have read and execute + permissions set for 'group' and 'other' as well as the + read/write/execute bits set for the 'user'.

      force directory mode (S)

      This parameter specifies a set of UNIX mode bit + permissions that will always be set on a directory + created by Samba. This is done by bitwise 'OR'ing these bits onto the + mode bits of a directory that is being created. The default for this + parameter is (in octal) 0000 which will not add any extra permission + bits to a created directory. This operation is done after the mode + mask in the parameter directory mask is + applied.

      See also the parameter + directory mask for details on masking mode bits + on created directories.

      See also the + inherit permissions parameter.

      Default: force directory mode = 000

      Example: force directory mode = 0755

      would force all created directories to have read and execute + permissions set for 'group' and 'other' as well as the + read/write/execute bits set for the 'user'.

      force directory security mode (S)

      This parameter controls what UNIX permission bits + can be modified when a Windows NT client is manipulating the UNIX + permission on a directory using the native NT security dialog box.

      This parameter is applied as a mask (OR'ed with) to the + changed permission bits, thus forcing any bits in this mask that + the user may have modified to be on. Essentially, one bits in this + mask may be treated as a set of bits that, when modifying security + on a directory, the user has always set to be 'on'.

      If not set explicitly this parameter is 000, which + allows a user to modify all the user/group/world permissions on a + directory without restrictions.

      Note that users who can access the + Samba server through other means can easily bypass this restriction, + so it is primarily useful for standalone "appliance" systems. + Administrators of most normal systems will probably want to leave + it set as 0000.

      See also the + directory security mask, + security mask, + force security mode + parameters.

      Default: force directory security mode = 0

      Example: force directory security mode = 700

      force group (S)

      This specifies a UNIX group name that will be + assigned as the default primary group for all users connecting + to this service. This is useful for sharing files by ensuring + that all access to files on service will use the named group for + their permissions checking. Thus, by assigning permissions for this + group to the files and directories within this service the Samba + administrator can restrict or allow sharing of these files.

      In Samba 2.0.5 and above this parameter has extended + functionality in the following way. If the group name listed here + has a '+' character prepended to it then the current user accessing + the share only has the primary group default assigned to this group + if they are already assigned as a member of that group. This allows + an administrator to decide that only users who are already in a + particular group will create files with group ownership set to that + group. This gives a finer granularity of ownership assignment. For + example, the setting force group = +sys means + that only users who are already in group sys will have their default + primary group assigned to sys when accessing this Samba share. All + other users will retain their ordinary primary group.

      If the force user + parameter is also set the group specified in + force group will override the primary group + set in force user.

      See also force user.

      Default: no forced group

      Example: force group = agroup

      force security mode (S)

      This parameter controls what UNIX permission + bits can be modified when a Windows NT client is manipulating + the UNIX permission on a file using the native NT security dialog + box.

      This parameter is applied as a mask (OR'ed with) to the + changed permission bits, thus forcing any bits in this mask that + the user may have modified to be on. Essentially, one bits in this + mask may be treated as a set of bits that, when modifying security + on a file, the user has always set to be 'on'.

      If not set explicitly this parameter is set to 0, + and allows a user to modify all the user/group/world permissions on a file, + with no restrictions.

      Note that users who can access + the Samba server through other means can easily bypass this restriction, + so it is primarily useful for standalone "appliance" systems. + Administrators of most normal systems will probably want to leave + this set to 0000.

      See also the + force directory security mode, + directory security + mask, + security mask parameters.

      Default: force security mode = 0

      Example: force security mode = 700

      force user (S)

      This specifies a UNIX user name that will be + assigned as the default user for all users connecting to this service. + This is useful for sharing files. You should also use it carefully + as using it incorrectly can cause security problems.

      This user name only gets used once a connection is established. + Thus clients still need to connect as a valid user and supply a + valid password. Once connected, all file operations will be performed + as the "forced user", no matter what username the client connected + as. This can be very useful.

      In Samba 2.0.5 and above this parameter also causes the + primary group of the forced user to be used as the primary group + for all file activity. Prior to 2.0.5 the primary group was left + as the primary group of the connecting user (this was a bug).

      See also force group

      Default: no forced user

      Example: force user = auser

      fstype (S)

      This parameter allows the administrator to + configure the string that specifies the type of filesystem a share + is using that is reported by smbd(8) when a client queries the filesystem type + for a share. The default type is NTFS for + compatibility with Windows NT but this can be changed to other + strings such as Samba or FAT + if required.

      Default: fstype = NTFS

      Example: fstype = Samba

      getwd cache (G)

      This is a tuning option. When this is enabled a + caching algorithm will be used to reduce the time taken for getwd() + calls. This can have a significant impact on performance, especially + when the wide links + parameter is set to no.

      Default: getwd cache = yes

      group (S)

      Synonym for + force group.

      guest account (G,S)

      This is a username which will be used for access + to services which are specified as + guest ok (see below). Whatever privileges this + user has will be available to any client connecting to the guest service. + Typically this user will exist in the password file, but will not + have a valid login. The user account "ftp" is often a good choice + for this parameter. If a username is specified in a given service, + the specified username overrides this one. +

      One some systems the default guest account "nobody" may not + be able to print. Use another account in this case. You should test + this by trying to log in as your guest user (perhaps by using the + su - command) and trying to print using the + system print command such as lpr(1) or + lp(1).

      This parameter does not accept % macros, because + many parts of the system require this value to be + constant for correct operation.

      Default: specified at compile time, usually "nobody"

      Example: guest account = ftp

      guest ok (S)

      If this parameter is yes for + a service, then no password is required to connect to the service. + Privileges will be those of the + guest account.

      This paramater nullifies the benifits of setting + restrict + anonymous = 2

      See the section below on + security for more information about this option. +

      Default: guest ok = no

      guest only (S)

      If this parameter is yes for + a service, then only guest connections to the service are permitted. + This parameter will have no effect if + guest ok is not set for the service.

      See the section below on + security for more information about this option. +

      Default: guest only = no

      hide dot files (S)

      This is a boolean parameter that controls whether + files starting with a dot appear as hidden files.

      Default: hide dot files = yes

      hide files (S)

      This is a list of files or directories that are not + visible but are accessible. The DOS 'hidden' attribute is applied + to any files or directories that match.

      Each entry in the list must be separated by a '/', + which allows spaces to be included in the entry. '*' + and '?' can be used to specify multiple files or directories + as in DOS wildcards.

      Each entry must be a Unix path, not a DOS path and must + not include the Unix directory separator '/'.

      Note that the case sensitivity option is applicable + in hiding files.

      Setting this parameter will affect the performance of Samba, + as it will be forced to check all files and directories for a match + as they are scanned.

      See also hide + dot files, + veto files and + case sensitive.

      Default: no file are hidden

      Example: hide files = + /.*/DesktopFolderDB/TrashFor%m/resource.frk/

      The above example is based on files that the Macintosh + SMB client (DAVE) available from + Thursby creates for internal use, and also still hides + all files beginning with a dot.

      hide local users (G)

      This parameter toggles the hiding of local UNIX + users (root, wheel, floppy, etc) from remote clients.

      Default: hide local users = no

      hide special files (S)

      This parameter prevents clients from seeing + special files such as sockets, devices and fifo's in directory + listings. +

      Default: hide special files = no

      hide unreadable (S)

      This parameter prevents clients from seeing the + existance of files that cannot be read. Defaults to off.

      Default: hide unreadable = no

      hide unwriteable files (S)

      This parameter prevents clients from seeing + the existance of files that cannot be written to. Defaults to off. + Note that unwriteable directories are shown as usual. +

      Default: hide unwriteable = no

      homedir map (G)

      Ifnis homedir + is yes, and smbd(8) is also acting + as a Win95/98 logon server then this parameter + specifies the NIS (or YP) map from which the server for the user's + home directory should be extracted. At present, only the Sun + auto.home map format is understood. The form of the map is:

      username server:/some/file/system

      and the program will extract the servername from before + the first ':'. There should probably be a better parsing system + that copes with different map formats and also Amd (another + automounter) maps.

      Note

      A working NIS client is required on + the system for this option to work.

      See also nis homedir + , domain logons + .

      Default: homedir map = <empty string>

      Example: homedir map = amd.homedir

      host msdfs (G)

      This boolean parameter is only available + if Samba has been configured and compiled with the + --with-msdfs option. If set to yes, + Samba will act as a Dfs server, and allow Dfs-aware clients + to browse Dfs trees hosted on the server.

      See also the + msdfs root share level parameter. For + more information on setting up a Dfs tree on Samba, + refer to msdfs_setup.html. +

      Default: host msdfs = no

      hostname lookups (G)

      Specifies whether samba should use (expensive) + hostname lookups or use the ip addresses instead. An example place + where hostname lookups are currently used is when checking + the hosts deny and hosts allow. +

      Default: hostname lookups = yes

      Example: hostname lookups = no

      hosts allow (S)

      A synonym for this parameter is allow + hosts.

      This parameter is a comma, space, or tab delimited + set of hosts which are permitted to access a service.

      If specified in the [global] section then it will + apply to all services, regardless of whether the individual + service has a different setting.

      You can specify the hosts by name or IP number. For + example, you could restrict access to only the hosts on a + Class C subnet with something like allow hosts = 150.203.5. + . The full syntax of the list is described in the man + page hosts_access(5). Note that this man + page may not be present on your system, so a brief description will + be given here also.

      Note that the localhost address 127.0.0.1 will always + be allowed access unless specifically denied by a + hosts deny option.

      You can also specify hosts by network/netmask pairs and + by netgroup names if your system supports netgroups. The + EXCEPT keyword can also be used to limit a + wildcard list. The following examples may provide some help:

      Example 1: allow all IPs in 150.203.*.*; except one

      hosts allow = 150.203. EXCEPT 150.203.6.66

      Example 2: allow hosts that match the given network/netmask

      hosts allow = 150.203.15.0/255.255.255.0

      Example 3: allow a couple of hosts

      hosts allow = lapland, arvidsjaur

      Example 4: allow only hosts in NIS netgroup "foonet", but + deny access from one particular host

      hosts allow = @foonet

      hosts deny = pirate

      Note

      Note that access still requires suitable user-level passwords.

      See testparm(1) for a way of testing your host access + to see if it does what you expect.

      Default: none (i.e., all hosts permitted access)

      Example: allow hosts = 150.203.5. myhost.mynet.edu.au

      hosts deny (S)

      The opposite of hosts allow + - hosts listed here are NOT permitted access to + services unless the specific services have their own lists to override + this one. Where the lists conflict, the allow + list takes precedence.

      Default: none (i.e., no hosts specifically excluded)

      Example: hosts deny = 150.203.4. badhost.mynet.edu.au

      hosts equiv (G)

      If this global parameter is a non-null string, + it specifies the name of a file to read for the names of hosts + and users who will be allowed access without specifying a password. +

      This is not be confused with + hosts allow which is about hosts + access to services and is more useful for guest services. + hosts equiv may be useful for NT clients which will + not supply passwords to Samba.

      Note

      The use of hosts equiv + can be a major security hole. This is because you are + trusting the PC to supply the correct username. It is very easy to + get a PC to supply a false username. I recommend that the + hosts equiv option be only used if you really + know what you are doing, or perhaps on a home network where you trust + your spouse and kids. And only if you really trust + them :-).

      Default: no host equivalences

      Example: hosts equiv = /etc/hosts.equiv

      include (G)

      This allows you to include one config file + inside another. The file is included literally, as though typed + in place.

      It takes the standard substitutions, except %u + , %P and %S. +

      Default: no file included

      Example: include = /usr/local/samba/lib/admin_smb.conf

      inherit acls (S)

      This parameter can be used to ensure that if default acls + exist on parent directories, they are always honored when creating a + subdirectory. The default behavior is to use the mode specified when + creating the directory. Enabling this option sets the mode to 0777, + thus guaranteeing that default directory acls are propagated. +

      Default: inherit acls = no +

      inherit permissions (S)

      The permissions on new files and directories + are normally governed by + create mask, + directory mask, + force create mode + and force + directory mode but the boolean inherit + permissions parameter overrides this.

      New directories inherit the mode of the parent directory, + including bits such as setgid.

      New files inherit their read/write bits from the parent + directory. Their execute bits continue to be determined by + map archive + , map hidden + and map system + as usual.

      Note that the setuid bit is never set via + inheritance (the code explicitly prohibits this).

      This can be particularly useful on large systems with + many users, perhaps several thousand, to allow a single [homes] + share to be used flexibly by each user.

      See also create mask + , + directory mask, + force create mode and + force directory mode + .

      Default: inherit permissions = no

      interfaces (G)

      This option allows you to override the default + network interfaces list that Samba will use for browsing, name + registration and other NBT traffic. By default Samba will query + the kernel for the list of all active interfaces and use any + interfaces except 127.0.0.1 that are broadcast capable.

      The option takes a list of interface strings. Each string + can be in any of the following forms:

      • a network interface name (such as eth0). + This may include shell-like wildcards so eth* will match + any interface starting with the substring "eth"

      • an IP address. In this case the netmask is + determined from the list of interfaces obtained from the + kernel

      • an IP/mask pair.

      • a broadcast/mask pair.

      The "mask" parameters can either be a bit length (such + as 24 for a C class network) or a full netmask in dotted + decimal form.

      The "IP" parameters above can either be a full dotted + decimal IP address or a hostname which will be looked up via + the OS's normal hostname resolution mechanisms.

      For example, the following line:

      interfaces = eth0 192.168.2.10/24 192.168.3.10/255.255.255.0

      would configure three network interfaces corresponding + to the eth0 device and IP addresses 192.168.2.10 and 192.168.3.10. + The netmasks of the latter two interfaces would be set to 255.255.255.0.

      See also bind + interfaces only.

      Default: all active interfaces except 127.0.0.1 + that are broadcast capable

      invalid users (S)

      This is a list of users that should not be allowed + to login to this service. This is really a paranoid + check to absolutely ensure an improper setting does not breach + your security.

      A name starting with a '@' is interpreted as an NIS + netgroup first (if your system supports NIS), and then as a UNIX + group if the name was not found in the NIS netgroup database.

      A name starting with '+' is interpreted only + by looking in the UNIX group database. A name starting with + '&' is interpreted only by looking in the NIS netgroup database + (this requires NIS to be working on your system). The characters + '+' and '&' may be used at the start of the name in either order + so the value +&group means check the + UNIX group database, followed by the NIS netgroup database, and + the value &+group means check the NIS + netgroup database, followed by the UNIX group database (the + same as the '@' prefix).

      The current servicename is substituted for %S. + This is useful in the [homes] section.

      See also valid users + .

      Default: no invalid users

      Example: invalid users = root fred admin @wheel

      keepalive (G)

      The value of the parameter (an integer) represents + the number of seconds between keepalive + packets. If this parameter is zero, no keepalive packets will be + sent. Keepalive packets, if sent, allow the server to tell whether + a client is still present and responding.

      Keepalives should, in general, not be needed if the socket + being used has the SO_KEEPALIVE attribute set on it (see + socket options). + Basically you should only use this option if you strike difficulties.

      Default: keepalive = 300

      Example: keepalive = 600

      kernel oplocks (G)

      For UNIXes that support kernel based + oplocks + (currently only IRIX and the Linux 2.4 kernel), this parameter + allows the use of them to be turned on or off.

      Kernel oplocks support allows Samba oplocks + to be broken whenever a local UNIX process or NFS operation + accesses a file that smbd(8) has oplocked. This allows complete + data consistency between SMB/CIFS, NFS and local file access (and is + a very cool feature :-).

      This parameter defaults to on, but is translated + to a no-op on systems that no not have the necessary kernel support. + You should never need to touch this parameter.

      See also the oplocks + and level2 oplocks + parameters.

      Default: kernel oplocks = yes

      lanman auth (G)

      This parameter determines whether or not smbd(8) will attempt to authenticate users + using the LANMAN password hash. If disabled, only clients which support NT + password hashes (e.g. Windows NT/2000 clients, smbclient, etc... but not + Windows 95/98 or the MS DOS network client) will be able to connect to the Samba host.

      The LANMAN encrypted response is easily broken, due to it's + case-insensitive nature, and the choice of algorithm. Servers + without Windows 95/98 or MS DOS clients are advised to disable + this option.

      Unlike the encypt + passwords option, this parameter cannot alter client + behaviour, and the LANMAN response will still be sent over the + network. See the client lanman + auth to disable this for Samba's clients (such as smbclient)

      If this option, and ntlm + auth are both disabled, then only NTLMv2 logins will be + permited. Not all clients support NTLMv2, and most will require + special configuration to us it.

      Default : lanman auth = yes

      large readwrite (G)

      This parameter determines whether or not + smbd(8) supports the new 64k + streaming read and write varient SMB requests introduced with + Windows 2000. Note that due to Windows 2000 client redirector bugs + this requires Samba to be running on a 64-bit capable operating + system such as IRIX, Solaris or a Linux 2.4 kernel. Can improve + performance by 10% with Windows 2000 clients. Defaults to on. Not as + tested as some other Samba code paths.

      Default: large readwrite = yes

      ldap admin dn (G)

      The ldap admin dn + defines the Distinguished Name (DN) name used by Samba to + contact the ldap server when retreiving user account + information. The ldap admin + dn is used in conjunction with the admin dn password + stored in the private/secrets.tdb file. + See the smbpasswd(8) man page for more + information on how to accmplish this.

      ldap delete dn (G)

      This parameter specifies whether a delete + operation in the ldapsam deletes the complete entry or only the attributes + specific to Samba. +

      Default: ldap delete dn = no

      ldap filter (G)

      This parameter specifies the RFC 2254 compliant LDAP search filter. + The default is to match the login name with the uid + attribute for all entries matching the sambaAccount + objectclass. Note that this filter should only return one entry. +

      Default: ldap filter = (&(uid=%u)(objectclass=sambaAccount))

      ldap machine suffix (G)

      It specifies where machines should be added to the ldap tree.

      Default: none

      ldap passwd sync (G)

      This option is used to define whether + or not Samba should sync the LDAP password with the NT + and LM hashes for normal accounts (NOT for + workstation, server or domain trusts) on a password + change via SAMBA. +

      The ldap passwd + sync can be set to one of three values:

      • Yes = Try + to update the LDAP, NT and LM passwords and update the pwdLastSet time.

      • No = Update NT and + LM passwords and update the pwdLastSet time.

      • Only = Only update + the LDAP password and let the LDAP server do the rest.

      Default: ldap passwd sync = no

      ldap port (G)

      This parameter is only available if Samba has been + configure to include the --with-ldapsam option + at compile time.

      This option is used to control the tcp port number used to contact + the ldap server. + The default is to use the stand LDAPS port 636.

      See Also: ldap ssl

      Default : ldap port = 636 ; if ldap ssl = on

      Default : ldap port = 389 ; if ldap ssl = off

      ldap server (G)

      This parameter is only available if Samba has been + configure to include the --with-ldapsam + option at compile time.

      This parameter should contain the FQDN of the ldap directory + server which should be queried to locate user account information. +

      Default : ldap server = localhost

      ldap ssl (G)

      This option is used to define whether or not Samba should + use SSL when connecting to the ldap server + This is NOT related to + Samba's previous SSL support which was enabled by specifying the + --with-ssl option to the configure + script.

      The ldap ssl can be set to one of three values:

      • Off = Never + use SSL when querying the directory.

      • Start_tls = Use + the LDAPv3 StartTLS extended operation (RFC2830) for + communicating with the directory server.

      • On = Use SSL + on the ldaps port when contacting the ldap server. Only available when the + backwards-compatiblity --with-ldapsam option is specified + to configure. See passdb backend

      Default : ldap ssl = start_tls

      ldap suffix (G)

      Specifies where user and machine accounts are added to the + tree. Can be overriden by ldap user + suffix and ldap machine + suffix. It also used as the base dn for all ldap + searches.

      Default: none

      ldap trust ids (G)

      Normally, Samba validates each entry in the LDAP server + against getpwnam(). This allows LDAP to be used for Samba with + the unix system using NIS (for example) and also ensures that + Samba does not present accounts that do not otherwise exist. +

      This option is used to disable this functionality, and + instead to rely on the presence of the appropriate attributes + in LDAP directly, which can result in a significant performance + boost in some situations. Setting this option to yes effectivly + assumes that the local machine is running nss_ldap against the same LDAP + server.

      Default: ldap trust ids = No

      ldap user suffix (G)

      It specifies where users are added to the tree.

      Default: none

      level2 oplocks (S)

      This parameter controls whether Samba supports + level2 (read-only) oplocks on a share.

      Level2, or read-only oplocks allow Windows NT clients + that have an oplock on a file to downgrade from a read-write oplock + to a read-only oplock once a second client opens the file (instead + of releasing all oplocks on a second open, as in traditional, + exclusive oplocks). This allows all openers of the file that + support level2 oplocks to cache the file for read-ahead only (ie. + they may not cache writes or lock requests) and increases performance + for many accesses of files that are not commonly written (such as + application .EXE files).

      Once one of the clients which have a read-only oplock + writes to the file all clients are notified (no reply is needed + or waited for) and told to break their oplocks to "none" and + delete any read-ahead caches.

      It is recommended that this parameter be turned on to + speed access to shared executables.

      For more discussions on level2 oplocks see the CIFS spec.

      Currently, if kernel + oplocks are supported then level2 oplocks are + not granted (even if this parameter is set to yes). + Note also, the oplocks + parameter must be set to yes on this share in order for + this parameter to have any effect.

      See also the oplocks + and kernel oplocks + parameters.

      Default: level2 oplocks = yes

      lm announce (G)

      This parameter determines if nmbd(8) will produce Lanman announce + broadcasts that are needed by OS/2 clients in order for them to see + the Samba server in their browse list. This parameter can have three + values, yes, no, or + auto. The default is auto. + If set to no Samba will never produce these + broadcasts. If set to yes Samba will produce + Lanman announce broadcasts at a frequency set by the parameter + lm interval. If set to auto + Samba will not send Lanman announce broadcasts by default but will + listen for them. If it hears such a broadcast on the wire it will + then start sending them at a frequency set by the parameter + lm interval.

      See also lm interval.

      Default: lm announce = auto

      Example: lm announce = yes

      lm interval (G)

      If Samba is set to produce Lanman announce + broadcasts needed by OS/2 clients (see the + lm announce parameter) then this + parameter defines the frequency in seconds with which they will be + made. If this is set to zero then no Lanman announcements will be + made despite the setting of the lm announce + parameter.

      See also lm announce.

      Default: lm interval = 60

      Example: lm interval = 120

      load printers (G)

      A boolean variable that controls whether all + printers in the printcap will be loaded for browsing by default. + See the printers section for + more details.

      Default: load printers = yes

      local master (G)

      This option allows nmbd(8) to try and become a local master browser + on a subnet. If set to no then + nmbd will not attempt to become a local master browser + on a subnet and will also lose in all browsing elections. By + default this value is set to yes. Setting this value to + yes doesn't mean that Samba will become the + local master browser on a subnet, just that nmbd + will participate in elections for local master browser.

      Setting this value to no will cause nmbd never to become a local + master browser.

      Default: local master = yes

      lock dir (G)

      Synonym for + lock directory. +

      lock directory (G)

      This option specifies the directory where lock + files will be placed. The lock files are used to implement the + max connections + option.

      Default: lock directory = ${prefix}/var/locks

      Example: lock directory = /var/run/samba/locks

      locking (S)

      This controls whether or not locking will be + performed by the server in response to lock requests from the + client.

      If locking = no, all lock and unlock + requests will appear to succeed and all lock queries will report + that the file in question is available for locking.

      If locking = yes, real locking will be performed + by the server.

      This option may be useful for read-only + filesystems which may not need locking (such as + CDROM drives), although setting this parameter of no + is not really recommended even in this case.

      Be careful about disabling locking either globally or in a + specific service, as lack of locking may result in data corruption. + You should never need to set this parameter.

      Default: locking = yes

      lock spin count (G)

      This parameter controls the number of times + that smbd should attempt to gain a byte range lock on the + behalf of a client request. Experiments have shown that + Windows 2k servers do not reply with a failure if the lock + could not be immediately granted, but try a few more times + in case the lock could later be aquired. This behavior + is used to support PC database formats such as MS Access + and FoxPro. +

      Default: lock spin count = 2

      lock spin time (G)

      The time in microseconds that smbd should + pause before attempting to gain a failed lock. See + lock spin + count for more details.

      Default: lock spin time = 10

      log file (G)

      This option allows you to override the name + of the Samba log file (also known as the debug file).

      This option takes the standard substitutions, allowing + you to have separate log files for each user or machine.

      Example: log file = /usr/local/samba/var/log.%m

      log level (G)

      The value of the parameter (a astring) allows + the debug level (logging level) to be specified in the + smb.conf file. This parameter has been + extended since the 2.2.x series, now it allow to specify the debug + level for multiple debug classes. This is to give greater + flexibility in the configuration of the system.

      The default will be the log level specified on + the command line or level zero if none was specified.

      Example: log level = 3 passdb:5 auth:10 winbind:2

      logon drive (G)

      This parameter specifies the local path to + which the home directory will be connected (see + logon home) + and is only used by NT Workstations.

      Note that this option is only useful if Samba is set up as a + logon server.

      Default: logon drive = z:

      Example: logon drive = h:

      logon home (G)

      This parameter specifies the home directory + location when a Win95/98 or NT Workstation logs into a Samba PDC. + It allows you to do

      C:\> + NET USE H: /HOME +

      from a command prompt, for example.

      This option takes the standard substitutions, allowing + you to have separate logon scripts for each user or machine.

      This parameter can be used with Win9X workstations to ensure + that roaming profiles are stored in a subdirectory of the user's + home directory. This is done in the following way:

      logon home = \\%N\%U\profile

      This tells Samba to return the above string, with + substitutions made when a client requests the info, generally + in a NetUserGetInfo request. Win9X clients truncate the info to + \\server\share when a user does net use /home + but use the whole string when dealing with profiles.

      Note that in prior versions of Samba, the + logon path was returned rather than + logon home. This broke net use /home but allowed profiles outside the home directory. + The current implementation is correct, and can be used for profiles if you use + the above trick.

      This option is only useful if Samba is set up as a logon + server.

      Default: logon home = "\\%N\%U"

      Example: logon home = "\\remote_smb_server\%U"

      logon path (G)

      This parameter specifies the home directory + where roaming profiles (NTuser.dat etc files for Windows NT) are + stored. Contrary to previous versions of these manual pages, it has + nothing to do with Win 9X roaming profiles. To find out how to + handle roaming profiles for Win 9X system, see the + logon home parameter.

      This option takes the standard substitutions, allowing you + to have separate logon scripts for each user or machine. It also + specifies the directory from which the "Application Data", + (desktop, start menu, + network neighborhood, programs + and other folders, and their contents, are loaded and displayed on + your Windows NT client.

      The share and the path must be readable by the user for + the preferences and directories to be loaded onto the Windows NT + client. The share must be writeable when the user logs in for the first + time, in order that the Windows NT client can create the NTuser.dat + and other directories.

      Thereafter, the directories and any of the contents can, + if required, be made read-only. It is not advisable that the + NTuser.dat file be made read-only - rename it to NTuser.man to + achieve the desired effect (a MANdatory + profile).

      Windows clients can sometimes maintain a connection to + the [homes] share, even though there is no user logged in. + Therefore, it is vital that the logon path does not include a + reference to the homes share (i.e. setting this parameter to + \%N\%U\profile_path will cause problems).

      This option takes the standard substitutions, allowing + you to have separate logon scripts for each user or machine.

      Note that this option is only useful if Samba is set up + as a logon server.

      Default: logon path = \\%N\%U\profile

      Example: logon path = \\PROFILESERVER\PROFILE\%U

      logon script (G)

      This parameter specifies the batch file (.bat) or + NT command file (.cmd) to be downloaded and run on a machine when + a user successfully logs in. The file must contain the DOS + style CR/LF line endings. Using a DOS-style editor to create the + file is recommended.

      The script must be a relative path to the [netlogon] + service. If the [netlogon] service specifies a + path of /usr/local/samba/netlogon, and logon script = STARTUP.BAT, then + the file that will be downloaded is:

      /usr/local/samba/netlogon/STARTUP.BAT

      The contents of the batch file are entirely your choice. A + suggested command would be to add NET TIME \\SERVER /SET + /YES, to force every machine to synchronize clocks with + the same time server. Another use would be to add NET USE + U: \\SERVER\UTILS for commonly used utilities, or + NET USE Q: \\SERVER\ISO9001_QA for example.

      Note that it is particularly important not to allow write + access to the [netlogon] share, or to grant users write permission + on the batch files in a secure environment, as this would allow + the batch files to be arbitrarily modified and security to be + breached.

      This option takes the standard substitutions, allowing you + to have separate logon scripts for each user or machine.

      This option is only useful if Samba is set up as a logon + server.

      Default: no logon script defined

      Example: logon script = scripts\%U.bat

      lppause command (S)

      This parameter specifies the command to be + executed on the server host in order to stop printing or spooling + a specific print job.

      This command should be a program or script which takes + a printer name and job number to pause the print job. One way + of implementing this is by using job priorities, where jobs + having a too low priority won't be sent to the printer.

      If a %p is given then the printer name + is put in its place. A %j is replaced with + the job number (an integer). On HPUX (see printing=hpux + ), if the -p%p option is added + to the lpq command, the job will show up with the correct status, i.e. + if the job priority is lower than the set fence priority it will + have the PAUSED status, whereas if the priority is equal or higher it + will have the SPOOLED or PRINTING status.

      Note that it is good practice to include the absolute path + in the lppause command as the PATH may not be available to the server.

      See also the printing + parameter.

      Default: Currently no default value is given to + this string, unless the value of the printing + parameter is SYSV, in which case the default is :

      lp -i %p-%j -H hold

      or if the value of the printing parameter + is SOFTQ, then the default is:

      qstat -s -j%j -h

      Example for HPUX: lppause command = /usr/bin/lpalt %p-%j -p0

      lpq cache time (G)

      This controls how long lpq info will be cached + for to prevent the lpq command being called too + often. A separate cache is kept for each variation of the + lpq command used by the system, so if you use different + lpq commands for different users then they won't + share cache information.

      The cache files are stored in /tmp/lpq.xxxx + where xxxx is a hash of the lpq command in use.

      The default is 10 seconds, meaning that the cached results + of a previous identical lpq command will be used + if the cached data is less than 10 seconds old. A large value may + be advisable if your lpq command is very slow.

      A value of 0 will disable caching completely.

      See also the printing parameter.

      Default: lpq cache time = 10

      Example: lpq cache time = 30

      lpq command (S)

      This parameter specifies the command to be + executed on the server host in order to obtain lpq + -style printer status information.

      This command should be a program or script which + takes a printer name as its only parameter and outputs printer + status information.

      Currently nine styles of printer status information + are supported; BSD, AIX, LPRNG, PLP, SYSV, HPUX, QNX, CUPS, and SOFTQ. + This covers most UNIX systems. You control which type is expected + using the printing = option.

      Some clients (notably Windows for Workgroups) may not + correctly send the connection number for the printer they are + requesting status information about. To get around this, the + server reports on the first printer service connected to by the + client. This only happens if the connection number sent is invalid.

      If a %p is given then the printer name + is put in its place. Otherwise it is placed at the end of the + command.

      Note that it is good practice to include the absolute path + in the lpq command as the $PATH + may not be available to the server. When compiled with + the CUPS libraries, no lpq command is + needed because smbd will make a library call to obtain the + print queue listing.

      See also the printing + parameter.

      Default: depends on the setting of + printing

      Example: lpq command = /usr/bin/lpq -P%p

      lpresume command (S)

      This parameter specifies the command to be + executed on the server host in order to restart or continue + printing or spooling a specific print job.

      This command should be a program or script which takes + a printer name and job number to resume the print job. See + also the lppause command + parameter.

      If a %p is given then the printer name + is put in its place. A %j is replaced with + the job number (an integer).

      Note that it is good practice to include the absolute path + in the lpresume command as the PATH may not + be available to the server.

      See also the printing + parameter.

      Default: Currently no default value is given + to this string, unless the value of the printing + parameter is SYSV, in which case the default is :

      lp -i %p-%j -H resume

      or if the value of the printing parameter + is SOFTQ, then the default is:

      qstat -s -j%j -r

      Example for HPUX: lpresume command = /usr/bin/lpalt %p-%j -p2

      lprm command (S)

      This parameter specifies the command to be + executed on the server host in order to delete a print job.

      This command should be a program or script which takes + a printer name and job number, and deletes the print job.

      If a %p is given then the printer name + is put in its place. A %j is replaced with + the job number (an integer).

      Note that it is good practice to include the absolute + path in the lprm command as the PATH may not be + available to the server.

      See also the printing + parameter.

      Default: depends on the setting of printing +

      Example 1: lprm command = /usr/bin/lprm -P%p %j

      Example 2: lprm command = /usr/bin/cancel %p-%j

      machine password timeout (G)

      If a Samba server is a member of a Windows + NT Domain (see the security = domain) + parameter) then periodically a running + smbd(8) process will try and change the MACHINE ACCOUNT + PASSWORD stored in the TDB called private/secrets.tdb + . This parameter specifies how often this password + will be changed, in seconds. The default is one week (expressed in + seconds), the same as a Windows NT Domain member server.

      See also smbpasswd(8), and the + security = domain) parameter.

      Default: machine password timeout = 604800

      magic output (S)

      This parameter specifies the name of a file + which will contain output created by a magic script (see the + magic script + parameter below).

      Warning: If two clients use the same magic script + in the same directory the output file content + is undefined.

      Default: magic output = <magic script name>.out

      Example: magic output = myfile.txt

      magic script (S)

      This parameter specifies the name of a file which, + if opened, will be executed by the server when the file is closed. + This allows a UNIX script to be sent to the Samba host and + executed on behalf of the connected user.

      Scripts executed in this way will be deleted upon + completion assuming that the user has the appropriate level + of privilege and the file permissions allow the deletion.

      If the script generates output, output will be sent to + the file specified by the + magic output parameter (see above).

      Note that some shells are unable to interpret scripts + containing CR/LF instead of CR as + the end-of-line marker. Magic scripts must be executable + as is on the host, which for some hosts and + some shells will require filtering at the DOS end.

      Magic scripts are EXPERIMENTAL and + should NOT be relied upon.

      Default: None. Magic scripts disabled.

      Example: magic script = user.csh

      mangle case (S)

      See the section on NAME MANGLING

      Default: mangle case = no

      mangled map (S)

      This is for those who want to directly map UNIX + file names which cannot be represented on Windows/DOS. The mangling + of names is not always what is needed. In particular you may have + documents with file extensions that differ between DOS and UNIX. + For example, under UNIX it is common to use .html + for HTML files, whereas under Windows/DOS .htm + is more commonly used.

      So to map html to htm + you would use:

      mangled map = (*.html *.htm)

      One very useful case is to remove the annoying ;1 + off the ends of filenames on some CDROMs (only visible + under some UNIXes). To do this use a map of (*;1 *;).

      Default: no mangled map

      Example: mangled map = (*;1 *;)

      mangled names (S)

      This controls whether non-DOS names under UNIX + should be mapped to DOS-compatible names ("mangled") and made visible, + or whether non-DOS names should simply be ignored.

      See the section on NAME MANGLING for + details on how to control the mangling process.

      If mangling is used then the mangling algorithm is as follows:

      • The first (up to) five alphanumeric characters + before the rightmost dot of the filename are preserved, forced + to upper case, and appear as the first (up to) five characters + of the mangled name.

      • A tilde "~" is appended to the first part of the mangled + name, followed by a two-character unique sequence, based on the + original root name (i.e., the original filename minus its final + extension). The final extension is included in the hash calculation + only if it contains any upper case characters or is longer than three + characters.

        Note that the character to use may be specified using + the mangling char + option, if you don't like '~'.

      • The first three alphanumeric characters of the final + extension are preserved, forced to upper case and appear as the + extension of the mangled name. The final extension is defined as that + part of the original filename after the rightmost dot. If there are no + dots in the filename, the mangled name will have no extension (except + in the case of "hidden files" - see below).

      • Files whose UNIX name begins with a dot will be + presented as DOS hidden files. The mangled name will be created as + for other filenames, but with the leading dot removed and "___" as + its extension regardless of actual original extension (that's three + underscores).

      The two-digit hash value consists of upper case alphanumeric characters.

      This algorithm can cause name collisions only if files + in a directory share the same first five alphanumeric characters. + The probability of such a clash is 1/1300.

      The name mangling (if enabled) allows a file to be + copied between UNIX directories from Windows/DOS while retaining + the long UNIX filename. UNIX files can be renamed to a new extension + from Windows/DOS and will retain the same basename. Mangled names + do not change between sessions.

      Default: mangled names = yes

      mangling stack (G)

      This parameter controls the number of mangled names + that should be cached in the Samba server smbd(8).

      This stack is a list of recently mangled base names + (extensions are only maintained if they are longer than 3 characters + or contains upper case characters).

      The larger this value, the more likely it is that mangled + names can be successfully converted to correct long UNIX names. + However, large stack sizes will slow most directory accesses. Smaller + stacks save memory in the server (each stack element costs 256 bytes). +

      It is not possible to absolutely guarantee correct long + filenames, so be prepared for some surprises!

      Default: mangled stack = 50

      Example: mangled stack = 100

      mangling prefix (G)

      controls the number of prefix + characters from the original name used when generating + the mangled names. A larger value will give a weaker + hash and therefore more name collisions. The minimum + value is 1 and the maximum value is 6.

      Default: mangle prefix = 1

      Example: mangle prefix = 4

      mangling char (S)

      This controls what character is used as + the magic character in name mangling. The + default is a '~' but this may interfere with some software. Use this option to set + it to whatever you prefer.

      Default: mangling char = ~

      Example: mangling char = ^

      mangling method (G)

      controls the algorithm used for the generating + the mangled names. Can take two different values, "hash" and + "hash2". "hash" is the default and is the algorithm that has been + used in Samba for many years. "hash2" is a newer and considered + a better algorithm (generates less collisions) in the names. + However, many Win32 applications store the mangled names and so + changing to the new algorithm must not be done + lightly as these applications may break unless reinstalled.

      Default: mangling method = hash2

      Example: mangling method = hash

      map archive (S)

      This controls whether the DOS archive attribute + should be mapped to the UNIX owner execute bit. The DOS archive bit + is set when a file has been modified since its last backup. One + motivation for this option it to keep Samba/your PC from making + any file it touches from becoming executable under UNIX. This can + be quite annoying for shared source code, documents, etc...

      Note that this requires the create mask + parameter to be set such that owner execute bit is not masked out + (i.e. it must include 100). See the parameter + create mask for details.

      Default: map archive = yes

      map hidden (S)

      This controls whether DOS style hidden files + should be mapped to the UNIX world execute bit.

      Note that this requires the create mask + to be set such that the world execute bit is not masked out (i.e. + it must include 001). See the parameter + create mask for details.

      Default: map hidden = no

      map system (S)

      This controls whether DOS style system files + should be mapped to the UNIX group execute bit.

      Note that this requires the create mask + to be set such that the group execute bit is not masked out (i.e. + it must include 010). See the parameter + create mask for details.

      Default: map system = no

      map to guest (G)

      This parameter is only useful in + security modes other than security = share + - i.e. user, server, + and domain.

      This parameter can take three different values, which tell + smbd(8) what to do with user + login requests that don't match a valid UNIX user in some way.

      The three settings are :

      • Never - Means user login + requests with an invalid password are rejected. This is the + default.

      • Bad User - Means user + logins with an invalid password are rejected, unless the username + does not exist, in which case it is treated as a guest login and + mapped into the + guest account.

      • Bad Password - Means user logins + with an invalid password are treated as a guest login and mapped + into the guest account. Note that + this can cause problems as it means that any user incorrectly typing + their password will be silently logged on as "guest" - and + will not know the reason they cannot access files they think + they should - there will have been no message given to them + that they got their password wrong. Helpdesk services will + hate you if you set the map to + guest parameter this way :-).

      Note that this parameter is needed to set up "Guest" + share services when using security modes other than + share. This is because in these modes the name of the resource being + requested is not sent to the server until after + the server has successfully authenticated the client so the server + cannot make authentication decisions at the correct time (connection + to the share) for "Guest" shares.

      For people familiar with the older Samba releases, this + parameter maps to the old compile-time setting of the + GUEST_SESSSETUP value in local.h.

      Default: map to guest = Never

      Example: map to guest = Bad User

      max connections (S)

      This option allows the number of simultaneous connections to a service to be limited. + If max connections is greater than 0 then connections + will be refused if this number of connections to the service are already open. A value + of zero mean an unlimited number of connections may be made.

      Record lock files are used to implement this feature. The lock files will be stored in + the directory specified by the + lock directory option.

      Default: max connections = 0

      Example: max connections = 10

      max disk size (G)

      This option allows you to put an upper limit + on the apparent size of disks. If you set this option to 100 + then all shares will appear to be not larger than 100 MB in + size.

      Note that this option does not limit the amount of + data you can put on the disk. In the above case you could still + store much more than 100 MB on the disk, but if a client ever asks + for the amount of free disk space or the total disk size then the + result will be bounded by the amount specified in max + disk size.

      This option is primarily useful to work around bugs + in some pieces of software that can't handle very large disks, + particularly disks over 1GB in size.

      A max disk size of 0 means no limit.

      Default: max disk size = 0

      Example: max disk size = 1000

      max log size (G)

      This option (an integer in kilobytes) specifies + the max size the log file should grow to. Samba periodically checks + the size and if it is exceeded it will rename the file, adding + a .old extension.

      A size of 0 means no limit.

      Default: max log size = 5000

      Example: max log size = 1000

      max mux (G)

      This option controls the maximum number of + outstanding simultaneous SMB operations that Samba tells the client + it will allow. You should never need to set this parameter.

      Default: max mux = 50

      max open files (G)

      This parameter limits the maximum number of + open files that one smbd(8) file + serving process may have open for a client at any one time. The + default for this parameter is set very high (10,000) as Samba uses + only one bit per unopened file.

      The limit of the number of open files is usually set + by the UNIX per-process file descriptor limit rather than + this parameter so you should never need to touch this parameter.

      Default: max open files = 10000

      max print jobs (S)

      This parameter limits the maximum number of + jobs allowable in a Samba printer queue at any given moment. + If this number is exceeded, smbd(8) will remote "Out of Space" to the client. + See all total + print jobs. +

      Default: max print jobs = 1000

      Example: max print jobs = 5000

      max protocol (G)

      The value of the parameter (a string) is the highest + protocol level that will be supported by the server.

      Possible values are :

      • CORE: Earliest version. No + concept of user names.

      • COREPLUS: Slight improvements on + CORE for efficiency.

      • LANMAN1: First + modern version of the protocol. Long filename + support.

      • LANMAN2: Updates to Lanman1 protocol.

      • NT1: Current up to date version of the protocol. + Used by Windows NT. Known as CIFS.

      Normally this option should not be set as the automatic + negotiation phase in the SMB protocol takes care of choosing + the appropriate protocol.

      See also min + protocol

      Default: max protocol = NT1

      Example: max protocol = LANMAN1

      max reported print jobs (S)

      This parameter limits the maximum number of + jobs displayed in a port monitor for Samba printer queue at any given + moment. If this number is exceeded, the excess jobs will not be shown. + A value of zero means there is no limit on the number of print + jobs reported. + + See all total + print jobs and max print + jobs parameters. +

      Default: max reported print jobs = 0

      Example: max reported print jobs = 1000

      max smbd processes (G)

      This parameter limits the maximum number of smbd(8) processes concurrently running on a system and is intended + as a stopgap to prevent degrading service to clients in the event that the server has insufficient + resources to handle more than this number of connections. Remember that under normal operating + conditions, each user will have an smbd(8) associated with him or her to handle connections to all + shares from a given host.

      Default: max smbd processes = 0 ## no limit

      Example: max smbd processes = 1000

      max ttl (G)

      This option tells nmbd(8) what the default 'time to live' + of NetBIOS names should be (in seconds) when nmbd is + requesting a name using either a broadcast packet or from a WINS server. You should + never need to change this parameter. The default is 3 days.

      Default: max ttl = 259200

      max wins ttl (G)

      This option tells smbd(8) when acting as a WINS server ( + wins support = yes) what the maximum + 'time to live' of NetBIOS names that nmbd + will grant will be (in seconds). You should never need to change this + parameter. The default is 6 days (518400 seconds).

      See also the min + wins ttl parameter.

      Default: max wins ttl = 518400

      max xmit (G)

      This option controls the maximum packet size + that will be negotiated by Samba. The default is 65535, which + is the maximum. In some cases you may find you get better performance + with a smaller value. A value below 2048 is likely to cause problems. +

      Default: max xmit = 65535

      Example: max xmit = 8192

      message command (G)

      This specifies what command to run when the + server receives a WinPopup style message.

      This would normally be a command that would + deliver the message somehow. How this is to be done is + up to your imagination.

      An example is:

      message command = csh -c 'xedit %s;rm %s' & +

      This delivers the message using xedit, then + removes it afterwards. NOTE THAT IT IS VERY IMPORTANT + THAT THIS COMMAND RETURN IMMEDIATELY. That's why I + have the '&' on the end. If it doesn't return immediately then + your PCs may freeze when sending messages (they should recover + after 30 seconds, hopefully).

      All messages are delivered as the global guest user. + The command takes the standard substitutions, although + %u won't work (%U may be better + in this case).

      Apart from the standard substitutions, some additional + ones apply. In particular:

      • %s = the filename containing + the message.

      • %t = the destination that + the message was sent to (probably the server name).

      • %f = who the message + is from.

      You could make this command send mail, or whatever else + takes your fancy. Please let us know of any really interesting + ideas you have.

      Here's a way of sending the messages as mail to root:

      message command = /bin/mail -s 'message from %f on + %m' root < %s; rm %s

      If you don't have a message command then the message + won't be delivered and Samba will tell the sender there was + an error. Unfortunately WfWg totally ignores the error code + and carries on regardless, saying that the message was delivered. +

      If you want to silently delete it then try:

      message command = rm %s

      Default: no message command

      Example: message command = csh -c 'xedit %s; rm %s' &

      min passwd length (G)

      Synonym for + min password length. +

      min password length (G)

      This option sets the minimum length in characters of a + plaintext password that smbd will + accept when performing UNIX password changing.

      See also unix + password sync, + passwd program and + passwd chat debug.

      Default: min password length = 5

      min print space (S)

      This sets the minimum amount of free disk + space that must be available before a user will be able to spool + a print job. It is specified in kilobytes. The default is 0, which + means a user can always spool a print job.

      See also the printing + parameter.

      Default: min print space = 0

      Example: min print space = 2000

      min protocol (G)

      The value of the parameter (a string) is the + lowest SMB protocol dialect than Samba will support. Please refer + to the max protocol + parameter for a list of valid protocol names and a brief description + of each. You may also wish to refer to the C source code in + source/smbd/negprot.c for a listing of known protocol + dialects supported by clients.

      If you are viewing this parameter as a security measure, you should + also refer to the lanman + auth parameter. Otherwise, you should never need + to change this parameter.

      Default : min protocol = CORE

      Example : min protocol = NT1 # disable DOS clients

      min wins ttl (G)

      This option tells nmbd(8) + when acting as a WINS server ( + wins support = yes) what the minimum 'time to live' + of NetBIOS names that nmbd will grant will be (in + seconds). You should never need to change this parameter. The default + is 6 hours (21600 seconds).

      Default: min wins ttl = 21600

      msdfs proxy (S)

      This parameter indicates that the share is a + stand-in for another CIFS share whose location is specified by + the value of the parameter. When clients attempt to connect to + this share, they are redirected to the proxied share using + the SMB-Dfs protocol.

      Only Dfs roots can act as proxy shares. Take a look at the + msdfs root + and host msdfs + options to find out how to set up a Dfs root share.

      Example: msdfs proxy = \\\\otherserver\\someshare

      msdfs root (S)

      This boolean parameter is only available if + Samba is configured and compiled with the + --with-msdfs option. If set to yes, + Samba treats the share as a Dfs root and allows clients to browse + the distributed file system tree rooted at the share directory. + Dfs links are specified in the share directory by symbolic + links of the form msdfs:serverA\\shareA,serverB\\shareB + and so on. For more information on setting up a Dfs tree + on Samba, refer to "Hosting a Microsoft + Distributed File System tree on Samba" document.

      See also host msdfs

      Default: msdfs root = no

      name cache timeout (G)

      Specifies the number of seconds it takes before + entries in samba's hostname resolve cache time out. If + the timeout is set to 0. the caching is disabled. +

      Default: name cache timeout = 660

      Example: name cache timeout = 0

      name resolve order (G)

      This option is used by the programs in the Samba + suite to determine what naming services to use and in what order + to resolve host names to IP addresses. The option takes a space + separated string of name resolution options.

      The options are: "lmhosts", "host", + "wins" and "bcast". They cause names to be + resolved as follows:

      • lmhosts : Lookup an IP + address in the Samba lmhosts file. If the line in lmhosts has + no name type attached to the NetBIOS name (see the lmhosts(5) for details) then + any name type matches for lookup.

      • host : Do a standard host + name to IP address resolution, using the system /etc/hosts + , NIS, or DNS lookups. This method of name resolution + is operating system depended for instance on IRIX or Solaris this + may be controlled by the /etc/nsswitch.conf + file. Note that this method is only used if the NetBIOS name + type being queried is the 0x20 (server) name type, otherwise + it is ignored.

      • wins : Query a name with + the IP address listed in the + wins server parameter. If no WINS server has + been specified this method will be ignored.

      • bcast : Do a broadcast on + each of the known local interfaces listed in the interfaces + parameter. This is the least reliable of the name resolution + methods as it depends on the target host being on a locally + connected subnet.

      Default: name resolve order = lmhosts host wins bcast

      Example: name resolve order = lmhosts bcast host

      This will cause the local lmhosts file to be examined + first, followed by a broadcast attempt, followed by a normal + system hostname lookup.

      netbios aliases (G)

      This is a list of NetBIOS names that nmbd(8) will + advertise as additional names by which the Samba server is known. This allows one machine + to appear in browse lists under multiple names. If a machine is acting as a browse server + or logon server none of these names will be advertised as either browse server or logon + servers, only the primary name of the machine will be advertised with these capabilities. +

      See also netbios + name.

      Default: empty string (no additional names)

      Example: netbios aliases = TEST TEST1 TEST2

      netbios name (G)

      This sets the NetBIOS name by which a Samba + server is known. By default it is the same as the first component + of the host's DNS name. If a machine is a browse server or + logon server this name (or the first component + of the hosts DNS name) will be the name that these services are + advertised under.

      See also netbios + aliases.

      Default: machine DNS name

      Example: netbios name = MYNAME

      netbios scope (G)

      This sets the NetBIOS scope that Samba will + operate under. This should not be set unless every machine + on your LAN also sets this value.

      nis homedir (G)

      Get the home share server from a NIS map. For + UNIX systems that use an automounter, the user's home directory + will often be mounted on a workstation on demand from a remote + server.

      When the Samba logon server is not the actual home directory + server, but is mounting the home directories via NFS then two + network hops would be required to access the users home directory + if the logon server told the client to use itself as the SMB server + for home directories (one over SMB and one over NFS). This can + be very slow.

      This option allows Samba to return the home share as + being on a different server to the logon server and as + long as a Samba daemon is running on the home directory server, + it will be mounted on the Samba client directly from the directory + server. When Samba is returning the home share to the client, it + will consult the NIS map specified in + homedir map and return the server + listed there.

      Note that for this option to work there must be a working + NIS system and the Samba server with this option must also + be a logon server.

      Default: nis homedir = no

      non unix account range (G)

      The non unix account range parameter specifies + the range of 'user ids' that are allocated by the various 'non unix + account' passdb backends. These backends allow + the storage of passwords for users who don't exist in /etc/passwd. + This is most often used for machine account creation. + This range of ids should have no existing local or NIS users within + it as strange conflicts can occur otherwise.

      Note

      These userids never appear on the system and Samba will never + 'become' these users. They are used only to ensure that the algorithmic + RID mapping does not conflict with normal users. +

      Default: non unix account range = <empty string>

      Example: non unix account range = 10000-20000

      nt acl support (S)

      This boolean parameter controls whether smbd(8) will attempt to map + UNIX permissions into Windows NT access control lists. + This parameter was formally a global parameter in releases + prior to 2.2.2.

      Default: nt acl support = yes

      ntlm auth (G)

      This parameter determines whether or not smbd(8) will attempt to + authenticate users using the NTLM encrypted password response. + If disabled, either the lanman password hash or an NTLMv2 response + will need to be sent by the client.

      If this option, and lanman + auth are both disabled, then only NTLMv2 logins will be + permited. Not all clients support NTLMv2, and most will require + special configuration to us it.

      Default : ntlm auth = yes

      nt pipe support (G)

      This boolean parameter controls whether + smbd(8) will allow Windows NT + clients to connect to the NT SMB specific IPC$ + pipes. This is a developer debugging option and can be left + alone.

      Default: nt pipe support = yes

      nt status support (G)

      This boolean parameter controls whether smbd(8) will negotiate NT specific status + support with Windows NT/2k/XP clients. This is a developer debugging option and should be left alone. + If this option is set to no then Samba offers + exactly the same DOS error codes that versions prior to Samba 2.2.3 + reported.

      You should not need to ever disable this parameter.

      Default: nt status support = yes

      null passwords (G)

      Allow or disallow client access to accounts that have null passwords.

      See also smbpasswd(5).

      Default: null passwords = no

      obey pam restrictions (G)

      When Samba 3.0 is configured to enable PAM support + (i.e. --with-pam), this parameter will control whether or not Samba + should obey PAM's account and session management directives. The + default behavior is to use PAM for clear text authentication only + and to ignore any account or session management. Note that Samba + always ignores PAM for authentication in the case of + encrypt passwords = yes. The reason + is that PAM modules cannot support the challenge/response + authentication mechanism needed in the presence of SMB password encryption. +

      Default: obey pam restrictions = no

      only guest (S)

      A synonym for + guest only.

      only user (S)

      This is a boolean option that controls whether + connections with usernames not in the user + list will be allowed. By default this option is disabled so that a + client can supply a username to be used by the server. Enabling + this parameter will force the server to only use the login + names from the user list and is only really + useful in share level + security.

      Note that this also means Samba won't try to deduce + usernames from the service name. This can be annoying for + the [homes] section. To get around this you could use user = + %S which means your user list + will be just the service name, which for home directories is the + name of the user.

      See also the user + parameter.

      Default: only user = no

      oplock break wait time (G)

      This is a tuning parameter added due to bugs in + both Windows 9x and WinNT. If Samba responds to a client too + quickly when that client issues an SMB that can cause an oplock + break request, then the network client can fail and not respond + to the break request. This tuning parameter (which is set in milliseconds) + is the amount of time Samba will wait before sending an oplock break + request to such (broken) clients.

      DO NOT CHANGE THIS PARAMETER UNLESS YOU HAVE READ AND + UNDERSTOOD THE SAMBA OPLOCK CODE.

      Default: oplock break wait time = 0

      oplock contention limit (S)

      This is a very advanced + smbd(8) tuning option to + improve the efficiency of the granting of oplocks under multiple + client contention for the same file.

      In brief it specifies a number, which causes smbd(8)not to grant an oplock even when requested + if the approximate number of clients contending for an oplock on the same file goes over this + limit. This causes smbd to behave in a similar + way to Windows NT.

      DO NOT CHANGE THIS PARAMETER UNLESS YOU HAVE READ + AND UNDERSTOOD THE SAMBA OPLOCK CODE.

      Default: oplock contention limit = 2

      oplocks (S)

      This boolean option tells smbd whether to + issue oplocks (opportunistic locks) to file open requests on this + share. The oplock code can dramatically (approx. 30% or more) improve + the speed of access to files on Samba servers. It allows the clients + to aggressively cache files locally and you may want to disable this + option for unreliable network environments (it is turned on by + default in Windows NT Servers). For more information see the file + Speed.txt in the Samba docs/ + directory.

      Oplocks may be selectively turned off on certain files with a + share. See the + veto oplock files parameter. On some systems + oplocks are recognized by the underlying operating system. This + allows data synchronization between all access to oplocked files, + whether it be via Samba or NFS or a local UNIX process. See the + kernel oplocks parameter for details.

      See also the kernel + oplocks and + level2 oplocks parameters.

      Default: oplocks = yes

      os2 driver map (G)

      The parameter is used to define the absolute + path to a file containing a mapping of Windows NT printer driver + names to OS/2 printer driver names. The format is:

      <nt driver name> = <os2 driver name>.<device name>

      For example, a valid entry using the HP LaserJet 5 + printer driver would appear as HP LaserJet 5L = LASERJET.HP + LaserJet 5L.

      The need for the file is due to the printer driver namespace + problem described in the Samba + Printing HOWTO. For more details on OS/2 clients, please + refer to the OS2-Client-HOWTO containing in the Samba documentation.

      Default: os2 driver map = <empty string>

      os level (G)

      This integer value controls what level Samba + advertises itself as for browse elections. The value of this + parameter determines whether nmbd(8) + has a chance of becoming a local master browser for the + WORKGROUP in the local broadcast area.

      Note :By default, Samba will win + a local master browsing election over all Microsoft operating + systems except a Windows NT 4.0/2000 Domain Controller. This + means that a misconfigured Samba host can effectively isolate + a subnet for browsing purposes. See BROWSING.txt + in the Samba docs/ directory + for details.

      Default: os level = 20

      Example: os level = 65

      pam password change (G)

      With the addition of better PAM support in Samba 2.2, + this parameter, it is possible to use PAM's password change control + flag for Samba. If enabled, then PAM will be used for password + changes when requested by an SMB client instead of the program listed in + passwd program. + It should be possible to enable this without changing your + passwd chat + parameter for most setups.

      Default: pam password change = no

      panic action (G)

      This is a Samba developer option that allows a + system command to be called when either smbd(8) or smbd(8) crashes. This is usually used to + draw attention to the fact that a problem occurred.

      Default: panic action = <empty string>

      Example: panic action = "/bin/sleep 90000"

      paranoid server security (G)

      Some version of NT 4.x allow non-guest + users with a bad passowrd. When this option is enabled, samba will not + use a broken NT 4.x server as password server, but instead complain + to the logs and exit. +

      Disabling this option prevents Samba from making + this check, which involves deliberatly attempting a + bad logon to the remote server.

      Default: paranoid server security = yes

      passdb backend (G)

      This option allows the administrator to chose which backends + to retrieve and store passwords with. This allows (for example) both + smbpasswd and tdbsam to be used without a recompile. Multiple + backends can be specified, separated by spaces. The backends will be + searched in the order they are specified. New users are always added + to the first backend specified.

      This parameter is in two parts, the backend's name, and a 'location' + string that has meaning only to that particular backed. These are separated + by a : character.

      Available backends can include: +

      • smbpasswd - The default smbpasswd + backend. Takes a path to the smbpasswd file as an optional argument. +

      • tdbsam - The TDB based password storage + backend. Takes a path to the TDB as an optional argument (defaults to passdb.tdb + in the + private dir directory.

      • ldapsam - The LDAP based passdb + backend. Takes an LDAP URL as an optional argument (defaults to + ldap://localhost)

        LDAP connections should be secured where possible. This may be done using either + Start-TLS (see ldap ssl) or by + specifying ldaps:// in + the URL argument.

      • nisplussam - + The NIS+ based passdb backend. Takes name NIS domain as + an optional argument. Only works with sun NIS+ servers. +

      • mysql - + The MySQL based passdb backend. Takes an identifier as + argument. Read the Samba HOWTO Collection for configuration + details. +

      • guest - + Very simple backend that only provides one user: the guest user. + Only maps the NT guest user to the guest account. + Required in pretty much all situations. +

      +

      Default: passdb backend = smbpasswd guest

      Example: passdb backend = tdbsam:/etc/samba/private/passdb.tdb smbpasswd:/etc/samba/smbpasswd guest

      Example: passdb backend = ldapsam:ldaps://ldap.example.com guest

      Example: passdb backend = mysql:my_plugin_args tdbsam:/etc/samba/private/passdb.tdb guest

      passwd chat (G)

      This string controls the "chat" + conversation that takes places between smbd(8) and the local password changing + program to change the user's password. The string describes a + sequence of response-receive pairs that smbd(8) uses to determine what to send to the + passwd program + and what to expect back. If the expected output is not + received then the password is not changed.

      This chat sequence is often quite site specific, depending + on what local methods are used for password control (such as NIS + etc).

      Note that this parameter only is only used if the unix password sync + parameter is set to yes. This sequence is + then called AS ROOT when the SMB password in the + smbpasswd file is being changed, without access to the old password + cleartext. This means that root must be able to reset the user's password without + knowing the text of the previous password. In the presence of + NIS/YP, this means that the passwd program must + be executed on the NIS master. +

      The string can contain the macro %n which is substituted + for the new password. The chat sequence can also contain the standard + macros \\n, \\r, \\t and \\s to + give line-feed, carriage-return, tab and space. The chat sequence string can also contain + a '*' which matches any sequence of characters. Double quotes can be used to collect strings with spaces + in them into a single string.

      If the send string in any part of the chat sequence is a full + stop ".", then no string is sent. Similarly, if the + expect string is a full stop then no string is expected.

      If the pam + password change parameter is set to yes, the chat pairs + may be matched in any order, and success is determined by the PAM result, + not any particular output. The \n macro is ignored for PAM conversions. +

      See also unix password + sync, + passwd program , + passwd chat debug and + pam password change.

      Default: passwd chat = *new*password* %n\\n + *new*password* %n\\n *changed*

      Example: passwd chat = "*Enter OLD password*" %o\\n + "*Enter NEW password*" %n\\n "*Reenter NEW password*" %n\\n + "*Password changed*"

      passwd chat debug (G)

      This boolean specifies if the passwd chat script + parameter is run in debug mode. In this mode the + strings passed to and received from the passwd chat are printed + in the smbd(8) log with a + debug level + of 100. This is a dangerous option as it will allow plaintext passwords + to be seen in the smbd log. It is available to help + Samba admins debug their passwd chat scripts + when calling the passwd program and should + be turned off after this has been done. This option has no effect if the + pam password change + paramter is set. This parameter is off by default.

      See also passwd chat + , pam password change + , passwd program + .

      Default: passwd chat debug = no

      passwd program (G)

      The name of a program that can be used to set + UNIX user passwords. Any occurrences of %u + will be replaced with the user name. The user name is checked for + existence before calling the password changing program.

      Also note that many passwd programs insist in reasonable + passwords, such as a minimum length, or the inclusion + of mixed case chars and digits. This can pose a problem as some clients + (such as Windows for Workgroups) uppercase the password before sending + it.

      Note that if the unix + password sync parameter is set to yes + then this program is called AS ROOT + before the SMB password in the smbpasswd(5) + file is changed. If this UNIX password change fails, then + smbd will fail to change the SMB password also + (this is by design).

      If the unix password sync parameter + is set this parameter MUST USE ABSOLUTE PATHS + for ALL programs called, and must be examined + for security implications. Note that by default unix + password sync is set to no.

      See also unix + password sync.

      Default: passwd program = /bin/passwd

      Example: passwd program = /sbin/npasswd %u

      password level (G)

      Some client/server combinations have difficulty + with mixed-case passwords. One offending client is Windows for + Workgroups, which for some reason forces passwords to upper + case when using the LANMAN1 protocol, but leaves them alone when + using COREPLUS! Another problem child is the Windows 95/98 + family of operating systems. These clients upper case clear + text passwords even when NT LM 0.12 selected by the protocol + negotiation request/response.

      This parameter defines the maximum number of characters + that may be upper case in passwords.

      For example, say the password given was "FRED". If + password level is set to 1, the following combinations + would be tried if "FRED" failed:

      "Fred", "fred", "fRed", "frEd","freD"

      If password level was set to 2, + the following combinations would also be tried:

      "FRed", "FrEd", "FreD", "fREd", "fReD", "frED", ..

      And so on.

      The higher value this parameter is set to the more likely + it is that a mixed case password will be matched against a single + case password. However, you should be aware that use of this + parameter reduces security and increases the time taken to + process a new connection.

      A value of zero will cause only two attempts to be + made - the password as is and the password in all-lower case.

      Default: password level = 0

      Example: password level = 4

      password server (G)

      By specifying the name of another SMB server (such + as a WinNT box) with this option, and using security = domain + or security = server you can get Samba + to do all its username/password validation via a remote server.

      This option sets the name of the password server to use. + It must be a NetBIOS name, so if the machine's NetBIOS name is + different from its Internet name then you may have to add its NetBIOS + name to the lmhosts file which is stored in the same directory + as the smb.conf file.

      The name of the password server is looked up using the + parameter name + resolve order and so may resolved + by any method and order described in that parameter.

      The password server must be a machine capable of using + the "LM1.2X002" or the "NT LM 0.12" protocol, and it must be in + user level security mode.

      Note

      Using a password server means your UNIX box (running + Samba) is only as secure as your password server. DO NOT + CHOOSE A PASSWORD SERVER THAT YOU DON'T COMPLETELY TRUST. +

      Never point a Samba server at itself for password serving. + This will cause a loop and could lock up your Samba server!

      The name of the password server takes the standard + substitutions, but probably the only useful one is %m + , which means the Samba server will use the incoming + client as the password server. If you use this then you better + trust your clients, and you had better restrict them with hosts allow!

      If the security parameter is set to + domain, then the list of machines in this + option must be a list of Primary or Backup Domain controllers for the + Domain or the character '*', as the Samba server is effectively + in that domain, and will use cryptographically authenticated RPC calls + to authenticate the user logging on. The advantage of using + security = domain is that if you list several hosts in the + password server option then smbd + will try each in turn till it finds one that responds. This + is useful in case your primary server goes down.

      If the password server option is set + to the character '*', then Samba will attempt to auto-locate the + Primary or Backup Domain controllers to authenticate against by + doing a query for the name WORKGROUP<1C> + and then contacting each server returned in the list of IP + addresses from the name resolution source.

      If the list of servers contains both names and the '*' + character, the list is treated as a list of preferred + domain controllers, but an auto lookup of all remaining DC's + will be added to the list as well. Samba will not attempt to optimize + this list by locating the closest DC.

      If the security parameter is + set to server, then there are different + restrictions that security = domain doesn't + suffer from:

      • You may list several password servers in + the password server parameter, however if an + smbd makes a connection to a password server, + and then the password server fails, no more users will be able + to be authenticated from this smbd. This is a + restriction of the SMB/CIFS protocol when in security = server + mode and cannot be fixed in Samba.

      • If you are using a Windows NT server as your + password server then you will have to ensure that your users + are able to login from the Samba server, as when in + security = server mode the network logon will appear to + come from there rather than from the users workstation.

      See also the security + parameter.

      Default: password server = <empty string>

      Example: password server = NT-PDC, NT-BDC1, NT-BDC2, *

      Example: password server = *

      path (S)

      This parameter specifies a directory to which + the user of the service is to be given access. In the case of + printable services, this is where print data will spool prior to + being submitted to the host for printing.

      For a printable service offering guest access, the service + should be readonly and the path should be world-writeable and + have the sticky bit set. This is not mandatory of course, but + you probably won't get the results you expect if you do + otherwise.

      Any occurrences of %u in the path + will be replaced with the UNIX username that the client is using + on this connection. Any occurrences of %m + will be replaced by the NetBIOS name of the machine they are + connecting from. These replacements are very useful for setting + up pseudo home directories for users.

      Note that this path will be based on + root dir if one was specified.

      Default: none

      Example: path = /home/fred

      pid directory (G)

      This option specifies the directory where pid + files will be placed.

      Default: pid directory = ${prefix}/var/locks

      Example: pid directory = /var/run/

      posix locking (S)

      The smbd(8) + daemon maintains an database of file locks obtained by SMB clients. + The default behavior is to map this internal database to POSIX + locks. This means that file locks obtained by SMB clients are + consistent with those seen by POSIX compliant applications accessing + the files via a non-SMB method (e.g. NFS or local file access). + You should never need to disable this parameter.

      Default: posix locking = yes

      postexec (S)

      This option specifies a command to be run + whenever the service is disconnected. It takes the usual + substitutions. The command may be run as the root on some + systems.

      An interesting example may be to unmount server + resources:

      postexec = /etc/umount /cdrom

      See also preexec.

      Default: none (no command executed)

      Example: postexec = echo \"%u disconnected from %S from %m (%I)\" >> /tmp/log

      preexec (S)

      This option specifies a command to be run whenever + the service is connected to. It takes the usual substitutions.

      An interesting example is to send the users a welcome + message every time they log in. Maybe a message of the day? Here + is an example:

      preexec = csh -c 'echo \"Welcome to %S!\" | /usr/local/samba/bin/smbclient -M %m -I %I' &

      Of course, this could get annoying after a while :-)

      See also preexec close and postexec + .

      Default: none (no command executed)

      Example: preexec = echo \"%u connected to %S from %m (%I)\" >> /tmp/log

      preexec close (S)

      This boolean option controls whether a non-zero + return code from preexec + should close the service being connected to.

      Default: preexec close = no

      prefered master (G)

      Synonym for + preferred master for people who cannot spell :-).

      preferred master (G)

      This boolean parameter controls if + nmbd(8) is a preferred master + browser for its workgroup.

      If this is set to yes, on startup, nmbd + will force an election, and it will have a slight advantage in + winning the election. It is recommended that this parameter is + used in conjunction with + domain master = yes, so + that nmbd can guarantee becoming a domain master.

      Use this option with caution, because if there are several + hosts (whether Samba servers, Windows 95 or NT) that are + preferred master browsers on the same subnet, they will each + periodically and continuously attempt to become the local + master browser. This will result in unnecessary broadcast + traffic and reduced browsing capabilities.

      See also os level.

      Default: preferred master = auto

      preload (G)

      This is a list of services that you want to be + automatically added to the browse lists. This is most useful + for homes and printers services that would otherwise not be + visible.

      Note that if you just want all printers in your + printcap file loaded then the + load printers option is easier.

      Default: no preloaded services

      Example: preload = fred lp colorlp

      preload modules (G)

      This is a list of paths to modules that should + be loaded into smbd before a client connects. This improves + the speed of smbd when reacting to new connections somewhat.

      It is recommended to only use this option on heavy-performance + servers.

      Default: preload modules =

      Example: preload modules = /usr/lib/samba/passdb/mysql.so+++

      preserve case (S)

      This controls if new filenames are created + with the case that the client passes, or if they are forced to + be the default case + .

      Default: preserve case = yes

      See the section on NAME MANGLING for a fuller discussion.

      printable (S)

      If this parameter is yes, then + clients may open, write to and submit spool files on the directory + specified for the service.

      Note that a printable service will ALWAYS allow writing + to the service path (user privileges permitting) via the spooling + of print data. The read only + parameter controls only non-printing access to + the resource.

      Default: printable = no

      printcap (G)

      Synonym for + printcap name.

      printcap name (S)

      This parameter may be used to override the + compiled-in default printcap name used by the server (usually + /etc/printcap). See the discussion of the [printers] section above for reasons + why you might want to do this.

      To use the CUPS printing interface set printcap name = cups + . This should be supplemented by an addtional setting + printing = cups in the [global] + section. printcap name = cups will use the + "dummy" printcap created by CUPS, as specified in your CUPS + configuration file. +

      On System V systems that use lpstat to + list available printers you can use printcap name = lpstat + to automatically obtain lists of available printers. This + is the default for systems that define SYSV at configure time in + Samba (this includes most System V based systems). If + printcap name is set to lpstat on + these systems then Samba will launch lpstat -v and + attempt to parse the output to obtain a printer list.

      A minimal printcap file would look something like this:

      +print1|My Printer 1
+print2|My Printer 2
+print3|My Printer 3
+print4|My Printer 4
+print5|My Printer 5
+

      where the '|' separates aliases of a printer. The fact + that the second alias has a space in it gives a hint to Samba + that it's a comment.

      Note

      Under AIX the default printcap + name is /etc/qconfig. Samba will assume the + file is in AIX qconfig format if the string + qconfig appears in the printcap filename.

      Default: printcap name = /etc/printcap

      Example: printcap name = /etc/myprintcap

      print command (S)

      After a print job has finished spooling to + a service, this command will be used via a system() + call to process the spool file. Typically the command specified will + submit the spool file to the host's printing subsystem, but there + is no requirement that this be the case. The server will not remove + the spool file, so whatever command you specify should remove the + spool file when it has been processed, otherwise you will need to + manually remove old spool files.

      The print command is simply a text string. It will be used + verbatim after macro substitutions have been made:

      %s, %f - the path to the spool + file name

      %p - the appropriate printer + name

      %J - the job + name as transmitted by the client.

      %c - The number of printed pages + of the spooled job (if known).

      %z - the size of the spooled + print job (in bytes)

      The print command MUST contain at least + one occurrence of %s or %f + - the %p is optional. At the time + a job is submitted, if no printer name is supplied the %p + will be silently removed from the printer command.

      If specified in the [global] section, the print command given + will be used for any printable service that does not have its own + print command specified.

      If there is neither a specified print command for a + printable service nor a global print command, spool files will + be created but not processed and (most importantly) not removed.

      Note that printing may fail on some UNIXes from the + nobody account. If this happens then create + an alternative guest account that can print and set the + guest account + in the [global] section.

      You can form quite complex print commands by realizing + that they are just passed to a shell. For example the following + will log a print job, print the file, then remove it. Note that + ';' is the usual separator for command in shell scripts.

      print command = echo Printing %s >> + /tmp/print.log; lpr -P %p %s; rm %s

      You may have to vary this command considerably depending + on how you normally print files on your system. The default for + the parameter varies depending on the setting of the + printing parameter.

      Default: For printing = BSD, AIX, QNX, LPRNG + or PLP :

      print command = lpr -r -P%p %s

      For printing = SYSV or HPUX :

      print command = lp -c -d%p %s; rm %s

      For printing = SOFTQ :

      print command = lp -d%p -s %s; rm %s

      For printing = CUPS : If SAMBA is compiled against + libcups, then printcap = cups + uses the CUPS API to + submit jobs, etc. Otherwise it maps to the System V + commands with the -oraw option for printing, i.e. it + uses lp -c -d%p -oraw; rm %s. + With printing = cups, + and if SAMBA is compiled against libcups, any manually + set print command will be ignored.

      Example: print command = /usr/local/samba/bin/myprintscript %p %s

      printer (S)

      Synonym for + printer name.

      printer admin (S)

      This is a list of users that can do anything to + printers via the remote administration interfaces offered by MS-RPC + (usually using a NT workstation). Note that the root user always + has admin rights.

      Default: printer admin = <empty string>

      Example: printer admin = admin, @staff

      printer name (S)

      This parameter specifies the name of the printer + to which print jobs spooled through a printable service will be sent.

      If specified in the [global] section, the printer + name given will be used for any printable service that does + not have its own printer name specified.

      Default: none (but may be lp + on many systems)

      Example: printer name = laserwriter

      printing (S)

      This parameters controls how printer status information is + interpreted on your system. It also affects the default values for + the print command, lpq command, lppause command , lpresume command, and lprm command if specified in the + [global] section.

      Currently nine printing styles are supported. They are + BSD, AIX, + LPRNG, PLP, + SYSV, HPUX, + QNX, SOFTQ, + and CUPS.

      To see what the defaults are for the other print + commands when using the various options use the testparm(1) program.

      This option can be set on a per printer basis

      See also the discussion in the + [printers] section.

      print ok (S)

      Synonym for + printable.

      private dir (G)

      This parameters defines the directory + smbd will use for storing such files as smbpasswd + and secrets.tdb. +

      Default :private dir = ${prefix}/private

      protocol (G)

      Synonym for + max protocol.

      public (S)

      Synonym for guest + ok.

      queuepause command (S)

      This parameter specifies the command to be + executed on the server host in order to pause the printer queue.

      This command should be a program or script which takes + a printer name as its only parameter and stops the printer queue, + such that no longer jobs are submitted to the printer.

      This command is not supported by Windows for Workgroups, + but can be issued from the Printers window under Windows 95 + and NT.

      If a %p is given then the printer name + is put in its place. Otherwise it is placed at the end of the command. +

      Note that it is good practice to include the absolute + path in the command as the PATH may not be available to the + server.

      Default: depends on the setting of printing

      Example: queuepause command = disable %p

      queueresume command (S)

      This parameter specifies the command to be + executed on the server host in order to resume the printer queue. It + is the command to undo the behavior that is caused by the + previous parameter ( + queuepause command).

      This command should be a program or script which takes + a printer name as its only parameter and resumes the printer queue, + such that queued jobs are resubmitted to the printer.

      This command is not supported by Windows for Workgroups, + but can be issued from the Printers window under Windows 95 + and NT.

      If a %p is given then the printer name + is put in its place. Otherwise it is placed at the end of the + command.

      Note that it is good practice to include the absolute + path in the command as the PATH may not be available to the + server.

      Default: depends on the setting of + printing

      Example: queuepause command = enable %p

      read bmpx (G)

      This boolean parameter controls whether + smbd(8) will support the "Read + Block Multiplex" SMB. This is now rarely used and defaults to + no. You should never need to set this + parameter.

      Default: read bmpx = no

      read list (S)

      This is a list of users that are given read-only + access to a service. If the connecting user is in this list then + they will not be given write access, no matter what the + read only + option is set to. The list can include group names using the + syntax described in the + invalid users parameter.

      See also the + write list parameter and the + invalid users + parameter.

      Default: read list = <empty string>

      Example: read list = mary, @students

      read only (S)

      An inverted synonym is + writeable.

      If this parameter is yes, then users + of a service may not create or modify files in the service's + directory.

      Note that a printable service (printable = yes) + will ALWAYS allow writing to the directory + (user privileges permitting), but only via spooling operations.

      Default: read only = yes

      read raw (G)

      This parameter controls whether or not the server + will support the raw read SMB requests when transferring data + to clients.

      If enabled, raw reads allow reads of 65535 bytes in + one packet. This typically provides a major performance benefit. +

      However, some clients either negotiate the allowable + block size incorrectly or are incapable of supporting larger block + sizes, and for these clients you may need to disable raw reads.

      In general this parameter should be viewed as a system tuning + tool and left severely alone. See also + write raw.

      Default: read raw = yes

      read size (G)

      The option read size + affects the overlap of disk reads/writes with network reads/writes. + If the amount of data being transferred in several of the SMB + commands (currently SMBwrite, SMBwriteX and SMBreadbraw) is larger + than this value then the server begins writing the data before it + has received the whole packet from the network, or in the case of + SMBreadbraw, it begins writing to the network before all the data + has been read from disk.

      This overlapping works best when the speeds of disk and + network access are similar, having very little effect when the + speed of one is much greater than the other.

      The default value is 16384, but very little experimentation + has been done yet to determine the optimal value, and it is likely + that the best value will vary greatly between systems anyway. + A value over 65536 is pointless and will cause you to allocate + memory unnecessarily.

      Default: read size = 16384

      Example: read size = 8192

      realm (G)

      This option specifies the kerberos realm to use. The realm is + used as the ADS equivalent of the NT4 domain. It + is usually set to the DNS name of the kerberos server. +

      Default: realm =

      Example: realm = mysambabox.mycompany.com

      remote announce (G)

      This option allows you to setup nmbd(8)to periodically announce itself + to arbitrary IP addresses with an arbitrary workgroup name.

      This is useful if you want your Samba server to appear + in a remote workgroup for which the normal browse propagation + rules don't work. The remote workgroup can be anywhere that you + can send IP packets to.

      For example:

      remote announce = 192.168.2.255/SERVERS + 192.168.4.255/STAFF

      the above line would cause nmbd to announce itself + to the two given IP addresses using the given workgroup names. + If you leave out the workgroup name then the one given in + the workgroup + parameter is used instead.

      The IP addresses you choose would normally be the broadcast + addresses of the remote networks, but can also be the IP addresses + of known browse masters if your network config is that stable.

      See the documentation file BROWSING + in the docs/ directory.

      Default: remote announce = <empty string>

      remote browse sync (G)

      This option allows you to setup nmbd(8) to periodically request + synchronization of browse lists with the master browser of a Samba + server that is on a remote segment. This option will allow you to + gain browse lists for multiple workgroups across routed networks. This + is done in a manner that does not work with any non-Samba servers.

      This is useful if you want your Samba server and all local + clients to appear in a remote workgroup for which the normal browse + propagation rules don't work. The remote workgroup can be anywhere + that you can send IP packets to.

      For example:

      remote browse sync = 192.168.2.255 192.168.4.255

      the above line would cause nmbd to request + the master browser on the specified subnets or addresses to + synchronize their browse lists with the local server.

      The IP addresses you choose would normally be the broadcast + addresses of the remote networks, but can also be the IP addresses + of known browse masters if your network config is that stable. If + a machine IP address is given Samba makes NO attempt to validate + that the remote machine is available, is listening, nor that it + is in fact the browse master on its segment.

      Default: remote browse sync = <empty string>

      restrict anonymous (G)

      The setting of this parameter determines whether user and + group list information is returned for an anonymous connection. + and mirrors the effects of the + HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\LSA\RestrictAnonymous registry key in Windows + 2000 and Windows NT. When set to 0, user and group list + information is returned to anyone who asks. When set + to 1, only an authenticated user can retrive user and + group list information. For the value 2, supported by + Windows 2000/XP and Samba, no anonymous connections are allowed at + all. This can break third party and Microsoft + applications which expect to be allowed to perform + operations anonymously.

      + The security advantage of using restrict anonymous = 1 is dubious, + as user and group list information can be obtained using other + means. +

      Note

      + The security advantage of using restrict anonymous = 2 is removed + by setting guest + ok = yes on any share. +

      Default: restrict anonymous = 0

      root (G)

      Synonym for + root directory". +

      root dir (G)

      Synonym for + root directory". +

      root directory (G)

      The server will chroot() (i.e. + Change its root directory) to this directory on startup. This is + not strictly necessary for secure operation. Even without it the + server will deny access to files not in one of the service entries. + It may also check for, and deny access to, soft links to other + parts of the filesystem, or attempts to use ".." in file names + to access other directories (depending on the setting of the + wide links + parameter). +

      Adding a root directory entry other + than "/" adds an extra level of security, but at a price. It + absolutely ensures that no access is given to files not in the + sub-tree specified in the root directory + option, including some files needed for + complete operation of the server. To maintain full operability + of the server you will need to mirror some system files + into the root directory tree. In particular + you will need to mirror /etc/passwd (or a + subset of it), and any binaries or configuration files needed for + printing (if required). The set of files that must be mirrored is + operating system dependent.

      Default: root directory = /

      Example: root directory = /homes/smb

      root postexec (S)

      This is the same as the postexec + parameter except that the command is run as root. This + is useful for unmounting filesystems + (such as CDROMs) after a connection is closed.

      See also + postexec.

      Default: root postexec = <empty string>

      root preexec (S)

      This is the same as the preexec + parameter except that the command is run as root. This + is useful for mounting filesystems (such as CDROMs) when a + connection is opened.

      See also + preexec and + preexec close.

      Default: root preexec = <empty string>

      root preexec close (S)

      This is the same as the preexec close + parameter except that the command is run as root.

      See also + preexec and + preexec close.

      Default: root preexec close = no

      security (G)

      This option affects how clients respond to + Samba and is one of the most important settings in the + smb.conf file.

      The option sets the "security mode bit" in replies to + protocol negotiations with smbd(8) to turn share level security on or off. Clients decide + based on this bit whether (and how) to transfer user and password + information to the server.

      The default is security = user, as this is + the most common setting needed when talking to Windows 98 and + Windows NT.

      The alternatives are security = share, + security = server or security = domain + .

      In versions of Samba prior to 2.0.0, the default was + security = share mainly because that was + the only option at one stage.

      There is a bug in WfWg that has relevance to this + setting. When in user or server level security a WfWg client + will totally ignore the password you type in the "connect + drive" dialog box. This makes it very difficult (if not impossible) + to connect to a Samba service as anyone except the user that + you are logged into WfWg as.

      If your PCs use usernames that are the same as their + usernames on the UNIX machine then you will want to use + security = user. If you mostly use usernames + that don't exist on the UNIX box then use security = + share.

      You should also use security = share if you + want to mainly setup shares without a password (guest shares). This + is commonly used for a shared printer server. It is more difficult + to setup guest shares with security = user, see + the map to guest + parameter for details.

      It is possible to use smbd in a + hybrid mode where it is offers both user and share + level security under different + NetBIOS aliases.

      The different settings will now be explained.

      SECURITY = SHARE

      When clients connect to a share level security server they + need not log onto the server with a valid username and password before + attempting to connect to a shared resource (although modern clients + such as Windows 95/98 and Windows NT will send a logon request with + a username but no password when talking to a security = share + server). Instead, the clients send authentication information + (passwords) on a per-share basis, at the time they attempt to connect + to that share.

      Note that smbd ALWAYS + uses a valid UNIX user to act on behalf of the client, even in + security = share level security.

      As clients are not required to send a username to the server + in share level security, smbd uses several + techniques to determine the correct UNIX user to use on behalf + of the client.

      A list of possible UNIX usernames to match with the given + client password is constructed using the following methods :

      • If the guest + only parameter is set, then all the other + stages are missed and only the + guest account username is checked. +

      • Is a username is sent with the share connection + request, then this username (after mapping - see + username map), + is added as a potential username. +

      • If the client did a previous logon + request (the SessionSetup SMB call) then the + username sent in this SMB will be added as a potential username. +

      • The name of the service the client requested is + added as a potential username. +

      • The NetBIOS name of the client is added to + the list as a potential username. +

      • Any users on the + user list are added as potential usernames. +

      If the guest only parameter is + not set, then this list is then tried with the supplied password. + The first user for whom the password matches will be used as the + UNIX user.

      If the guest only parameter is + set, or no username can be determined then if the share is marked + as available to the guest account, then this + guest user will be used, otherwise access is denied.

      Note that it can be very confusing + in share-level security as to which UNIX username will eventually + be used in granting access.

      See also the section + NOTE ABOUT USERNAME/PASSWORD VALIDATION.

      SECURITY = USER

      This is the default security setting in Samba 3.0. + With user-level security a client must first "log-on" with a + valid username and password (which can be mapped using the + username map + parameter). Encrypted passwords (see the + encrypted passwords parameter) can also + be used in this security mode. Parameters such as + user and + guest only if set are then applied and + may change the UNIX user to use on this connection, but only after + the user has been successfully authenticated.

      Note that the name of the resource being + requested is not sent to the server until after + the server has successfully authenticated the client. This is why + guest shares don't work in user level security without allowing + the server to automatically map unknown users into the + guest account. + See the map to guest + parameter for details on doing this.

      See also the section + NOTE ABOUT USERNAME/PASSWORD VALIDATION.

      SECURITY = DOMAIN

      This mode will only work correctly if net(8) has been used to add this + machine into a Windows NT Domain. It expects the + encrypted passwords + parameter to be set to yes. In this + mode Samba will try to validate the username/password by passing + it to a Windows NT Primary or Backup Domain Controller, in exactly + the same way that a Windows NT Server would do.

      Note that a valid UNIX user must still + exist as well as the account on the Domain Controller to allow + Samba to have a valid UNIX account to map file access to.

      Note that from the client's point + of view security = domain is the same + as security = user. It only + affects how the server deals with the authentication, + it does not in any way affect what the client sees.

      Note that the name of the resource being + requested is not sent to the server until after + the server has successfully authenticated the client. This is why + guest shares don't work in user level security without allowing + the server to automatically map unknown users into the + guest account. + See the map to guest + parameter for details on doing this.

      See also the section + NOTE ABOUT USERNAME/PASSWORD VALIDATION.

      See also the password + server parameter and the + encrypted passwords + parameter.

      SECURITY = SERVER

      In this mode Samba will try to validate the username/password + by passing it to another SMB server, such as an NT box. If this + fails it will revert to security = + user. It expects the + encrypted passwords parameter + to be set to yes, unless the remote server + does not support them. However note that if encrypted passwords have been + negotiated then Samba cannot revert back to checking the UNIX password file, + it must have a valid smbpasswd file to check + users against. See the chapter about the User Database in the Samba HOWTO Collection for details on how to set this up.

      Note this mode of operation has + significant pitfalls, due to the fact that is activly initiates a + man-in-the-middle attack on the remote SMB server. In particular, + this mode of operation can cause significant resource consuption on + the PDC, as it must maintain an active connection for the duration + of the user's session. Furthermore, if this connection is lost, + there is no way to reestablish it, and futher authenticaions to the + Samba server may fail. (From a single client, till it disconnects). +

      Note that from the client's point of + view security = server is the + same as security = user. It + only affects how the server deals with the authentication, it does + not in any way affect what the client sees.

      Note that the name of the resource being + requested is not sent to the server until after + the server has successfully authenticated the client. This is why + guest shares don't work in user level security without allowing + the server to automatically map unknown users into the + guest account. + See the map to guest + parameter for details on doing this.

      See also the section + NOTE ABOUT USERNAME/PASSWORD VALIDATION.

      See also the password + server parameter and the + encrypted passwords parameter.

      Default: security = USER

      Example: security = DOMAIN

      security mask (S)

      This parameter controls what UNIX permission + bits can be modified when a Windows NT client is manipulating + the UNIX permission on a file using the native NT security + dialog box.

      This parameter is applied as a mask (AND'ed with) to + the changed permission bits, thus preventing any bits not in + this mask from being modified. Essentially, zero bits in this + mask may be treated as a set of bits the user is not allowed + to change.

      If not set explicitly this parameter is 0777, allowing + a user to modify all the user/group/world permissions on a file. +

      Note that users who can access the + Samba server through other means can easily bypass this + restriction, so it is primarily useful for standalone + "appliance" systems. Administrators of most normal systems will + probably want to leave it set to 0777.

      See also the + force directory security mode, + directory + security mask, + force security mode parameters.

      Default: security mask = 0777

      Example: security mask = 0770

      server schannel (G)

      This controls whether the server offers or even + demands the use of the netlogon schannel. + server schannel = no does not + offer the schannel, server schannel = + auto offers the schannel but does not + enforce it, and server schannel = + yes denies access if the client is not + able to speak netlogon schannel. This is only the case + for Windows NT4 before SP4.

      Please note that with this set to + no you will have to apply the + WindowsXP requireSignOrSeal-Registry patch found in + the docs/Registry subdirectory.

      Default: server schannel = auto

      Example: server schannel = yes

      server string (G)

      This controls what string will show up in the printer comment box in print + manager and next to the IPC connection in net view. It + can be any string that you wish to show to your users.

      It also sets what will appear in browse lists next + to the machine name.

      A %v will be replaced with the Samba + version number.

      A %h will be replaced with the + hostname.

      Default: server string = Samba %v

      Example: server string = University of GNUs Samba + Server

      set directory (S)

      If set directory = no, then + users of the service may not use the setdir command to change + directory.

      The setdir command is only implemented + in the Digital Pathworks client. See the Pathworks documentation + for details.

      Default: set directory = no

      set primary group script (G)

      Thanks to the Posix subsystem in NT a Windows User has a + primary group in addition to the auxiliary groups. This script + sets the primary group in the unix userdatase when an + administrator sets the primary group from the windows user + manager or when fetching a SAM with net rpc + vampire. %u will be replaced + with the user whose primary group is to be set. + %g will be replaced with the group to + set.

      Default: No default value

      Example: set primary group script = /usr/sbin/usermod -g '%g' '%u'

      share modes (S)

      This enables or disables the honoring of + the share modes during a file open. These + modes are used by clients to gain exclusive read or write access + to a file.

      These open modes are not directly supported by UNIX, so + they are simulated using shared memory, or lock files if your + UNIX doesn't support shared memory (almost all do).

      The share modes that are enabled by this option are + DENY_DOS, DENY_ALL, + DENY_READ, DENY_WRITE, + DENY_NONE and DENY_FCB. +

      This option gives full share compatibility and enabled + by default.

      You should NEVER turn this parameter + off as many Windows applications will break if you do so.

      Default: share modes = yes

      short preserve case (S)

      This boolean parameter controls if new files + which conform to 8.3 syntax, that is all in upper case and of + suitable length, are created upper case, or if they are forced + to be the default case + . This option can be use with preserve case = yes + to permit long filenames to retain their case, while short + names are lowered.

      See the section on NAME MANGLING.

      Default: short preserve case = yes

      show add printer wizard (G)

      With the introduction of MS-RPC based printing support + for Windows NT/2000 client in Samba 2.2, a "Printers..." folder will + appear on Samba hosts in the share listing. Normally this folder will + contain an icon for the MS Add Printer Wizard (APW). However, it is + possible to disable this feature regardless of the level of privilege + of the connected user.

      Under normal circumstances, the Windows NT/2000 client will + open a handle on the printer server with OpenPrinterEx() asking for + Administrator privileges. If the user does not have administrative + access on the print server (i.e is not root or a member of the + printer admin group), the OpenPrinterEx() + call fails and the client makes another open call with a request for + a lower privilege level. This should succeed, however the APW + icon will not be displayed.

      Disabling the show add printer wizard + parameter will always cause the OpenPrinterEx() on the server + to fail. Thus the APW icon will never be displayed. + Note :This does not prevent the same user from having + administrative privilege on an individual printer.

      See also addprinter + command, + deleteprinter command, + printer admin

      Default :show add printer wizard = yes

      shutdown script (G)

      This parameter only exists in the HEAD cvs branch + This a full path name to a script called by smbd(8) that should start a shutdown procedure.

      This command will be run as the user connected to the server.

      %m %t %r %f parameters are expanded:

      • %m will be substituted with the + shutdown message sent to the server.

      • %t will be substituted with the + number of seconds to wait before effectively starting the + shutdown procedure.

      • %r will be substituted with the + switch -r. It means reboot after shutdown + for NT.

      • %f will be substituted with the + switch -f. It means force the shutdown + even if applications do not respond for NT.

      Default: None.

      Example: abort shutdown script = /usr/local/samba/sbin/shutdown %m %t %r %f

      Shutdown script example: +
      +#!/bin/bash
+		
+$time=0
+let "time/60"
+let "time++"
+
+/sbin/shutdown $3 $4 +$time $1 &
+
      +Shutdown does not return so we need to launch it in background. +

      See also + abort shutdown script.

      smb passwd file (G)

      This option sets the path to the encrypted smbpasswd file. By + default the path to the smbpasswd file is compiled into Samba.

      Default: smb passwd file = ${prefix}/private/smbpasswd

      Example: smb passwd file = /etc/samba/smbpasswd

      smb ports (G)

      Specifies which ports the server should listen on for SMB traffic.

      Default: smb ports = 445 139

      socket address (G)

      This option allows you to control what + address Samba will listen for connections on. This is used to + support multiple virtual interfaces on the one server, each + with a different configuration.

      By default Samba will accept connections on any + address.

      Example: socket address = 192.168.2.20

      socket options (G)

      This option allows you to set socket options + to be used when talking with the client.

      Socket options are controls on the networking layer + of the operating systems which allow the connection to be + tuned.

      This option will typically be used to tune your Samba server + for optimal performance for your local network. There is no way + that Samba can know what the optimal parameters are for your net, + so you must experiment and choose them yourself. We strongly + suggest you read the appropriate documentation for your operating + system first (perhaps man + setsockopt will help).

      You may find that on some systems Samba will say + "Unknown socket option" when you supply an option. This means you + either incorrectly typed it or you need to add an include file + to includes.h for your OS. If the latter is the case please + send the patch to + samba-technical@samba.org.

      Any of the supported socket options may be combined + in any way you like, as long as your OS allows it.

      This is the list of socket options currently settable + using this option:

      • SO_KEEPALIVE

      • SO_REUSEADDR

      • SO_BROADCAST

      • TCP_NODELAY

      • IPTOS_LOWDELAY

      • IPTOS_THROUGHPUT

      • SO_SNDBUF *

      • SO_RCVBUF *

      • SO_SNDLOWAT *

      • SO_RCVLOWAT *

      Those marked with a '*' take an integer + argument. The others can optionally take a 1 or 0 argument to enable + or disable the option, by default they will be enabled if you + don't specify 1 or 0.

      To specify an argument use the syntax SOME_OPTION = VALUE + for example SO_SNDBUF = 8192. Note that you must + not have any spaces before or after the = sign.

      If you are on a local network then a sensible option + might be:

      socket options = IPTOS_LOWDELAY

      If you have a local network then you could try:

      socket options = IPTOS_LOWDELAY TCP_NODELAY

      If you are on a wide area network then perhaps try + setting IPTOS_THROUGHPUT.

      Note that several of the options may cause your Samba + server to fail completely. Use these options with caution!

      Default: socket options = TCP_NODELAY

      Example: socket options = IPTOS_LOWDELAY

      source environment (G)

      This parameter causes Samba to set environment + variables as per the content of the file named.

      If the value of this parameter starts with a "|" character + then Samba will treat that value as a pipe command to open and + will set the environment variables from the output of the pipe.

      The contents of the file or the output of the pipe should + be formatted as the output of the standard Unix env(1) command. This is of the form:

      Example environment entry:

      SAMBA_NETBIOS_NAME = myhostname

      Default: No default value

      Examples: source environment = |/etc/smb.conf.sh

      Example: source environment = + /usr/local/smb_env_vars

      stat cache (G)

      This parameter determines if smbd(8) will use a cache in order to + speed up case insensitive name mappings. You should never need + to change this parameter.

      Default: stat cache = yes

      stat cache size (G)

      This parameter determines the number of + entries in the stat cache. You should + never need to change this parameter.

      Default: stat cache size = 50

      strict allocate (S)

      This is a boolean that controls the handling of + disk space allocation in the server. When this is set to yes + the server will change from UNIX behaviour of not committing real + disk storage blocks when a file is extended to the Windows behaviour + of actually forcing the disk system to allocate real storage blocks + when a file is created or extended to be a given size. In UNIX + terminology this means that Samba will stop creating sparse files. + This can be slow on some systems.

      When strict allocate is no the server does sparse + disk block allocation when a file is extended.

      Setting this to yes can help Samba return + out of quota messages on systems that are restricting the disk quota + of users.

      Default: strict allocate = no

      strict locking (S)

      This is a boolean that controls the handling of + file locking in the server. When this is set to yes + the server will check every read and write access for file locks, and + deny access if locks exist. This can be slow on some systems.

      When strict locking is no the server does file + lock checks only when the client explicitly asks for them.

      Well-behaved clients always ask for lock checks when it + is important, so in the vast majority of cases strict + locking = no is preferable.

      Default: strict locking = no

      strict sync (S)

      Many Windows applications (including the Windows 98 explorer + shell) seem to confuse flushing buffer contents to disk with doing + a sync to disk. Under UNIX, a sync call forces the process to be + suspended until the kernel has ensured that all outstanding data in + kernel disk buffers has been safely stored onto stable storage. + This is very slow and should only be done rarely. Setting this + parameter to no (the default) means that + smbd(8) ignores the Windows + applications requests for a sync call. There is only a possibility + of losing data if the operating system itself that Samba is running + on crashes, so there is little danger in this default setting. In + addition, this fixes many performance problems that people have + reported with the new Windows98 explorer shell file copies.

      See also the sync + always parameter.

      Default: strict sync = no

      strip dot (G)

      This is a boolean that controls whether to + strip trailing dots off UNIX filenames. This helps with some + CDROMs that have filenames ending in a single dot.

      Default: strip dot = no

      sync always (S)

      This is a boolean parameter that controls + whether writes will always be written to stable storage before + the write call returns. If this is no then the server will be + guided by the client's request in each write call (clients can + set a bit indicating that a particular write should be synchronous). + If this is yes then every write will be followed by a fsync() + call to ensure the data is written to disk. Note that + the strict sync parameter must be set to + yes in order for this parameter to have + any affect.

      See also the strict + sync parameter.

      Default: sync always = no

      syslog (G)

      This parameter maps how Samba debug messages + are logged onto the system syslog logging levels. Samba debug + level zero maps onto syslog LOG_ERR, debug + level one maps onto LOG_WARNING, debug level + two maps onto LOG_NOTICE, debug level three + maps onto LOG_INFO. All higher levels are mapped to + LOG_DEBUG.

      This parameter sets the threshold for sending messages + to syslog. Only messages with debug level less than this value + will be sent to syslog.

      Default: syslog = 1

      syslog only (G)

      If this parameter is set then Samba debug + messages are logged into the system syslog only, and not to + the debug log files.

      Default: syslog only = no

      template homedir (G)

      When filling out the user information for a Windows NT + user, the winbindd(8) daemon uses this + parameter to fill in the home directory for that user. If the + string %D is present it + is substituted with the user's Windows NT domain name. If the + string %U is present it + is substituted with the user's Windows NT user name.

      Default: template homedir = /home/%D/%U

      template shell (G)

      When filling out the user information for a Windows NT + user, the winbindd(8) daemon uses this + parameter to fill in the login shell for that user.

      Default: template shell = /bin/false

      time offset (G)

      This parameter is a setting in minutes to add + to the normal GMT to local time conversion. This is useful if + you are serving a lot of PCs that have incorrect daylight + saving time handling.

      Default: time offset = 0

      Example: time offset = 60

      time server (G)

      This parameter determines if nmbd(8) advertises itself as a time server to Windows + clients.

      Default: time server = no

      timestamp logs (G)

      Synonym for + debug timestamp.

      total print jobs (G)

      This parameter accepts an integer value which defines + a limit on the maximum number of print jobs that will be accepted + system wide at any given time. If a print job is submitted + by a client which will exceed this number, then smbd(8) will return an + error indicating that no space is available on the server. The + default value of 0 means that no such limit exists. This parameter + can be used to prevent a server from exceeding its capacity and is + designed as a printing throttle. See also + max print jobs. +

      Default: total print jobs = 0

      Example: total print jobs = 5000

      unicode (G)

      Specifies whether Samba should try + to use unicode on the wire by default. Note: This does NOT + mean that samba will assume that the unix machine uses unicode! +

      Default: unicode = yes

      unix charset (G)

      Specifies the charset the unix machine + Samba runs on uses. Samba needs to know this in order to be able to + convert text to the charsets other SMB clients use. +

      Default: unix charset = UTF8

      Example: unix charset = ASCII

      unix extensions (G)

      This boolean parameter controls whether Samba + implments the CIFS UNIX extensions, as defined by HP. + These extensions enable Samba to better serve UNIX CIFS clients + by supporting features such as symbolic links, hard links, etc... + These extensions require a similarly enabled client, and are of + no current use to Windows clients.

      Default: unix extensions = no

      unix password sync (G)

      This boolean parameter controls whether Samba + attempts to synchronize the UNIX password with the SMB password + when the encrypted SMB password in the smbpasswd file is changed. + If this is set to yes the program specified in the passwd + programparameter is called AS ROOT - + to allow the new UNIX password to be set without access to the + old UNIX password (as the SMB password change code has no + access to the old password cleartext, only the new).

      See also passwd + program, + passwd chat. +

      Default: unix password sync = no

      update encrypted (G)

      This boolean parameter allows a user logging on with + a plaintext password to have their encrypted (hashed) password in + the smbpasswd file to be updated automatically as they log + on. This option allows a site to migrate from plaintext + password authentication (users authenticate with plaintext + password over the wire, and are checked against a UNIX account + database) to encrypted password authentication (the SMB + challenge/response authentication mechanism) without forcing all + users to re-enter their passwords via smbpasswd at the time the + change is made. This is a convenience option to allow the change + over to encrypted passwords to be made over a longer period. + Once all users have encrypted representations of their passwords + in the smbpasswd file this parameter should be set to + no.

      In order for this parameter to work correctly the + encrypt passwords parameter must + be set to no when this parameter is set to yes.

      Note that even when this parameter is set a user + authenticating to smbd must still enter a valid + password in order to connect correctly, and to update their hashed + (smbpasswd) passwords.

      Default: update encrypted = no

      use client driver (S)

      This parameter applies only to Windows NT/2000 + clients. It has no effect on Windows 95/98/ME clients. When + serving a printer to Windows NT/2000 clients without first installing + a valid printer driver on the Samba host, the client will be required + to install a local printer driver. From this point on, the client + will treat the print as a local printer and not a network printer + connection. This is much the same behavior that will occur + when disable spoolss = yes. +

      The differentiating factor is that under normal + circumstances, the NT/2000 client will attempt to open the network + printer using MS-RPC. The problem is that because the client + considers the printer to be local, it will attempt to issue the + OpenPrinterEx() call requesting access rights associated with the + logged on user. If the user possesses local administator rights but + not root privilegde on the Samba host (often the case), the + OpenPrinterEx() call will fail. The result is that the client will + now display an "Access Denied; Unable to connect" message + in the printer queue window (even though jobs may successfully be + printed).

      If this parameter is enabled for a printer, then any attempt + to open the printer with the PRINTER_ACCESS_ADMINISTER right is mapped + to PRINTER_ACCESS_USE instead. Thus allowing the OpenPrinterEx() + call to succeed. This parameter MUST not be able enabled + on a print share which has valid print driver installed on the Samba + server.

      See also disable spoolss

      Default: use client driver = no

      use mmap (G)

      This global parameter determines if the tdb internals of Samba can + depend on mmap working correctly on the running system. Samba requires a coherent + mmap/read-write system memory cache. Currently only HPUX does not have such a + coherent cache, and so this parameter is set to no by + default on HPUX. On all other systems this parameter should be left alone. This + parameter is provided to help the Samba developers track down problems with + the tdb internal code. +

      Default: use mmap = yes

      user (S)

      Synonym for username.

      username (S)

      Multiple users may be specified in a comma-delimited + list, in which case the supplied password will be tested against + each username in turn (left to right).

      The username line is needed only when + the PC is unable to supply its own username. This is the case + for the COREPLUS protocol or where your users have different WfWg + usernames to UNIX usernames. In both these cases you may also be + better using the \\server\share%user syntax instead.

      The username line is not a great + solution in many cases as it means Samba will try to validate + the supplied password against each of the usernames in the + username line in turn. This is slow and + a bad idea for lots of users in case of duplicate passwords. + You may get timeouts or security breaches using this parameter + unwisely.

      Samba relies on the underlying UNIX security. This + parameter does not restrict who can login, it just offers hints + to the Samba server as to what usernames might correspond to the + supplied password. Users can login as whoever they please and + they will be able to do no more damage than if they started a + telnet session. The daemon runs as the user that they log in as, + so they cannot do anything that user cannot do.

      To restrict a service to a particular set of users you + can use the valid users + parameter.

      If any of the usernames begin with a '@' then the name + will be looked up first in the NIS netgroups list (if Samba + is compiled with netgroup support), followed by a lookup in + the UNIX groups database and will expand to a list of all users + in the group of that name.

      If any of the usernames begin with a '+' then the name + will be looked up only in the UNIX groups database and will + expand to a list of all users in the group of that name.

      If any of the usernames begin with a '&' then the name + will be looked up only in the NIS netgroups database (if Samba + is compiled with netgroup support) and will expand to a list + of all users in the netgroup group of that name.

      Note that searching though a groups database can take + quite some time, and some clients may time out during the + search.

      See the section NOTE ABOUT + USERNAME/PASSWORD VALIDATION for more information on how + this parameter determines access to the services.

      Default: The guest account if a guest service, + else <empty string>.

      Examples:username = fred, mary, jack, jane, + @users, @pcgroup

      username level (G)

      This option helps Samba to try and 'guess' at + the real UNIX username, as many DOS clients send an all-uppercase + username. By default Samba tries all lowercase, followed by the + username with the first letter capitalized, and fails if the + username is not found on the UNIX machine.

      If this parameter is set to non-zero the behavior changes. + This parameter is a number that specifies the number of uppercase + combinations to try while trying to determine the UNIX user name. The + higher the number the more combinations will be tried, but the slower + the discovery of usernames will be. Use this parameter when you have + strange usernames on your UNIX machine, such as AstrangeUser + .

      Default: username level = 0

      Example: username level = 5

      username map (G)

      This option allows you to specify a file containing + a mapping of usernames from the clients to the server. This can be + used for several purposes. The most common is to map usernames + that users use on DOS or Windows machines to those that the UNIX + box uses. The other is to map multiple users to a single username + so that they can more easily share files.

      The map file is parsed line by line. Each line should + contain a single UNIX username on the left then a '=' followed + by a list of usernames on the right. The list of usernames on the + right may contain names of the form @group in which case they + will match any UNIX username in that group. The special client + name '*' is a wildcard and matches any name. Each line of the + map file may be up to 1023 characters long.

      The file is processed on each line by taking the + supplied username and comparing it with each username on the right + hand side of the '=' signs. If the supplied name matches any of + the names on the right hand side then it is replaced with the name + on the left. Processing then continues with the next line.

      If any line begins with a '#' or a ';' then it is ignored

      If any line begins with an '!' then the processing + will stop after that line if a mapping was done by the line. + Otherwise mapping continues with every line being processed. + Using '!' is most useful when you have a wildcard mapping line + later in the file.

      For example to map from the name admin + or administrator to the UNIX name + root you would use:

      root = admin administrator

      Or to map anyone in the UNIX group system + to the UNIX name sys you would use:

      sys = @system

      You can have as many mappings as you like in a username map file.

      If your system supports the NIS NETGROUP option then + the netgroup database is checked before the /etc/group + database for matching groups.

      You can map Windows usernames that have spaces in them + by using double quotes around the name. For example:

      tridge = "Andrew Tridgell"

      would map the windows username "Andrew Tridgell" to the + unix username "tridge".

      The following example would map mary and fred to the + unix user sys, and map the rest to guest. Note the use of the + '!' to tell Samba to stop processing if it gets a match on + that line.

      +!sys = mary fred
+guest = *
+

      Note that the remapping is applied to all occurrences + of usernames. Thus if you connect to \\server\fred and + fred is remapped to mary then you + will actually be connecting to \\server\mary and will need to + supply a password suitable for mary not + fred. The only exception to this is the + username passed to the + password server (if you have one). The password + server will receive whatever username the client supplies without + modification.

      Also note that no reverse mapping is done. The main effect + this has is with printing. Users who have been mapped may have + trouble deleting print jobs as PrintManager under WfWg will think + they don't own the print job.

      Default: no username map

      Example: username map = /usr/local/samba/lib/users.map

      users (S)

      Synonym for + username.

      use sendfile (S)

      If this parameter is yes, and Samba + was built with the --with-sendfile-support option, and the underlying operating + system supports sendfile system call, then some SMB read calls (mainly ReadAndX + and ReadRaw) will use the more efficient sendfile system call for files that + are exclusively oplocked. This may make more efficient use of the system CPU's + and cause Samba to be faster. This is off by default as it's effects are unknown + as yet.

      Default: use sendfile = no

      use spnego (G)

      This variable controls controls whether samba will try + to use Simple and Protected NEGOciation (as specified by rfc2478) with + WindowsXP and Windows2000 clients to agree upon an authentication mechanism. + Unless further issues are discovered with our SPNEGO + implementation, there is no reason this should ever be + disabled.

      Default: use spnego = yes

      utmp (G)

      This boolean parameter is only available if + Samba has been configured and compiled with the option + --with-utmp. If set to yes then Samba will attempt + to add utmp or utmpx records (depending on the UNIX system) whenever a + connection is made to a Samba server. Sites may use this to record the + user connecting to a Samba share.

      Due to the requirements of the utmp record, we + are required to create a unique identifier for the + incoming user. Enabling this option creates an n^2 + algorithm to find this number. This may impede + performance on large installations.

      See also the + utmp directory parameter.

      Default: utmp = no

      utmp directory (G)

      This parameter is only available if Samba has + been configured and compiled with the option + --with-utmp. It specifies a directory pathname that is + used to store the utmp or utmpx files (depending on the UNIX system) that + record user connections to a Samba server. See also the + utmp parameter. By default this is + not set, meaning the system will use whatever utmp file the + native system is set to use (usually + /var/run/utmp on Linux).

      Default: no utmp directory

      Example: utmp directory = /var/run/utmp

      -valid (S)

      This parameter indicates whether a share is + valid and thus can be used. When this parameter is set to false, + the share will be in no way visible nor accessible. +

      + This option should not be + used by regular users but might be of help to developers. + Samba uses this option internally to mark shares as deleted. +

      Default: True

      valid users (S)

      This is a list of users that should be allowed + to login to this service. Names starting with '@', '+' and '&' + are interpreted using the same rules as described in the + invalid users parameter.

      If this is empty (the default) then any user can login. + If a username is in both this list and the invalid + users list then access is denied for that user.

      The current servicename is substituted for %S + . This is useful in the [homes] section.

      See also invalid users +

      Default: No valid users list (anyone can login) +

      Example: valid users = greg, @pcusers

      veto files (S)

      This is a list of files and directories that + are neither visible nor accessible. Each entry in the list must + be separated by a '/', which allows spaces to be included + in the entry. '*' and '?' can be used to specify multiple files + or directories as in DOS wildcards.

      Each entry must be a unix path, not a DOS path and + must not include the unix directory + separator '/'.

      Note that the case sensitive option + is applicable in vetoing files.

      One feature of the veto files parameter that it + is important to be aware of is Samba's behaviour when + trying to delete a directory. If a directory that is + to be deleted contains nothing but veto files this + deletion will fail unless you also set + the delete veto files parameter to + yes.

      Setting this parameter will affect the performance + of Samba, as it will be forced to check all files and directories + for a match as they are scanned.

      See also hide files + and + case sensitive.

      Default: No files or directories are vetoed. +

      Examples: +
      +; Veto any files containing the word Security, 
+; any ending in .tmp, and any directory containing the
+; word root.
+veto files = /*Security*/*.tmp/*root*/
+
+; Veto the Apple specific files that a NetAtalk server
+; creates.
+veto files = /.AppleDouble/.bin/.AppleDesktop/Network Trash Folder/
+
      veto oplock files (S)

      This parameter is only valid when the + oplocks + parameter is turned on for a share. It allows the Samba administrator + to selectively turn off the granting of oplocks on selected files that + match a wildcarded list, similar to the wildcarded list used in the + veto files + parameter.

      Default: No files are vetoed for oplock grants

      You might want to do this on files that you know will + be heavily contended for by clients. A good example of this + is in the NetBench SMB benchmark program, which causes heavy + client contention for files ending in .SEM. + To cause Samba not to grant oplocks on these files you would use + the line (either in the [global] section or in the section for + the particular NetBench share :

      Example: veto oplock files = /*.SEM/

      vfs object (S)

      Synonym for + + vfs objects + . +

      vfs objects (S)

      This parameter specifies the backend names which + are used for Samba VFS I/O operations. By default, normal + disk I/O operations are used but these can be overloaded + with one or more VFS objects.

      Default: no value

      Example: vfs objects = extd_audit recycle

      volume (S)

      This allows you to override the volume label + returned for a share. Useful for CDROMs with installation programs + that insist on a particular volume label.

      Default: the name of the share

      wide links (S)

      This parameter controls whether or not links + in the UNIX file system may be followed by the server. Links + that point to areas within the directory tree exported by the + server are always allowed; this parameter controls access only + to areas that are outside the directory tree being exported.

      Note that setting this parameter can have a negative + effect on your server performance due to the extra system calls + that Samba has to do in order to perform the link checks.

      Default: wide links = yes

      winbind cache time (G)

      This parameter specifies the number of + seconds the winbindd(8) daemon will cache + user and group information before querying a Windows NT server + again.

      Default: winbind cache type = 15

      winbind enum groups (G)

      On large installations using winbindd(8) it may be necessary to suppress + the enumeration of groups through the setgrent(), + getgrent() and + endgrent() group of system calls. If + the winbind enum groups parameter is + no, calls to the getgrent() system + call will not return any data.

      Warning: Turning off group + enumeration may cause some programs to behave oddly. +

      Default: winbind enum groups = yes

      winbind enum users (G)

      On large installations using winbindd(8) it may be + necessary to suppress the enumeration of users through the setpwent(), + getpwent() and + endpwent() group of system calls. If + the winbind enum users parameter is + no, calls to the getpwent system call + will not return any data.

      Warning: Turning off user + enumeration may cause some programs to behave oddly. For + example, the finger program relies on having access to the + full user list when searching for matching + usernames.

      Default: winbind enum users = yes

      winbind gid (G)

      The winbind gid parameter specifies the range of group + ids that are allocated by the winbindd(8) daemon. This range of group ids should have no + existing local or NIS groups within it as strange conflicts can + occur otherwise.

      Default: winbind gid = <empty string>

      Example: winbind gid = 10000-20000

      winbind separator (G)

      This parameter allows an admin to define the character + used when listing a username of the form of DOMAIN + \user. This parameter + is only applicable when using the pam_winbind.so + and nss_winbind.so modules for UNIX services. +

      Please note that setting this parameter to + causes problems + with group membership at least on glibc systems, as the character + + is used as a special character for NIS in /etc/group.

      Default: winbind separator = '\'

      Example: winbind separator = +

      winbind uid (G)

      The winbind gid parameter specifies the range of group + ids that are allocated by the winbindd(8) daemon. This range of ids should have no + existing local or NIS users within it as strange conflicts can + occur otherwise.

      Default: winbind uid = <empty string>

      Example: winbind uid = 10000-20000

      winbind used default domain (G)

      This parameter specifies whether the + winbindd(8) daemon should operate on users + without domain component in their username. Users without a domain + component are treated as is part of the winbindd server's own + domain. While this does not benifit Windows users, it makes SSH, FTP and + e-mail function in a way much closer to the way they + would in a native unix system.

      Default: winbind use default domain = <no>

      Example: winbind use default domain = yes

      wins hook (G)

      When Samba is running as a WINS server this + allows you to call an external program for all changes to the + WINS database. The primary use for this option is to allow the + dynamic update of external name resolution databases such as + dynamic DNS.

      The wins hook parameter specifies the name of a script + or executable that will be called as follows:

      wins_hook operation name nametype ttl IP_list

      • The first argument is the operation and is + one of "add", "delete", or + "refresh". In most cases the operation + can be ignored as the rest of the parameters + provide sufficient information. Note that + "refresh" may sometimes be called when + the name has not previously been added, in that + case it should be treated as an add.

      • The second argument is the NetBIOS name. If the + name is not a legal name then the wins hook is not called. + Legal names contain only letters, digits, hyphens, underscores + and periods.

      • The third argument is the NetBIOS name + type as a 2 digit hexadecimal number.

      • The fourth argument is the TTL (time to live) + for the name in seconds.

      • The fifth and subsequent arguments are the IP + addresses currently registered for that name. If this list is + empty then the name should be deleted.

      An example script that calls the BIND dynamic DNS update + program nsupdate is provided in the examples + directory of the Samba source code.

      wins partner (G)

      A space separated list of partners' IP addresses for + WINS replication. WINS partners are always defined as push/pull + partners as defining only one way WINS replication is unreliable. + WINS replication is currently experimental and unreliable between + samba servers. +

      Default: wins partners =

      Example: wins partners = 192.168.0.1 172.16.1.2

      wins proxy (G)

      This is a boolean that controls if nmbd(8) will respond to broadcast name + queries on behalf of other hosts. You may need to set this + to yes for some older clients.

      Default: wins proxy = no

      wins server (G)

      This specifies the IP address (or DNS name: IP + address for preference) of the WINS server that nmbd(8) should register with. If you have a WINS server on + your network then you should set this to the WINS server's IP.

      You should point this at your WINS server if you have a + multi-subnetted network.

      If you want to work in multiple namespaces, you can + give every wins server a 'tag'. For each tag, only one + (working) server will be queried for a name. The tag should be + seperated from the ip address by a colon. +

      Note

      You need to set up Samba to point + to a WINS server if you have multiple subnets and wish cross-subnet + browsing to work correctly.

      See the documentation file Browsing in the samba howto collection.

      Default: not enabled

      Example: wins server = mary:192.9.200.1 fred:192.168.3.199 mary:192.168.2.61

      For this example when querying a certain name, 192.19.200.1 will + be asked first and if that doesn't respond 192.168.2.61. If either + of those doesn't know the name 192.168.3.199 will be queried. +

      Example: wins server = 192.9.200.1 192.168.2.61

      wins support (G)

      This boolean controls if the nmbd(8) process in Samba will act as a WINS server. You should + not set this to yes unless you have a multi-subnetted network and + you wish a particular nmbd to be your WINS server. + Note that you should NEVER set this to yes + on more than one machine in your network.

      Default: wins support = no

      workgroup (G)

      This controls what workgroup your server will + appear to be in when queried by clients. Note that this parameter + also controls the Domain name used with + the security = domain + setting.

      Default: set at compile time to WORKGROUP

      Example: workgroup = MYGROUP

      writable (S)

      Synonym for + writeable for people who can't spell :-).

      writeable (S)

      Inverted synonym for + read only.

      write cache size (S)

      If this integer parameter is set to non-zero value, + Samba will create an in-memory cache for each oplocked file + (it does not do this for + non-oplocked files). All writes that the client does not request + to be flushed directly to disk will be stored in this cache if possible. + The cache is flushed onto disk when a write comes in whose offset + would not fit into the cache or when the file is closed by the client. + Reads for the file are also served from this cache if the data is stored + within it.

      This cache allows Samba to batch client writes into a more + efficient write size for RAID disks (i.e. writes may be tuned to + be the RAID stripe size) and can improve performance on systems + where the disk subsystem is a bottleneck but there is free + memory for userspace programs.

      The integer parameter specifies the size of this cache + (per oplocked file) in bytes.

      Default: write cache size = 0

      Example: write cache size = 262144

      for a 256k cache size per file.

      write list (S)

      This is a list of users that are given read-write + access to a service. If the connecting user is in this list then + they will be given write access, no matter what the + read only + option is set to. The list can include group names using the + @group syntax.

      Note that if a user is in both the read list and the + write list then they will be given write access.

      See also the read list + option.

      Default: write list = <empty string>

      Example: write list = admin, root, @staff

      write ok (S)

      Inverted synonym for + read only.

      write raw (G)

      This parameter controls whether or not the server + will support raw write SMB's when transferring data from clients. + You should never need to change this parameter.

      Default: write raw = yes

      wtmp directory (G)

      This parameter is only available if Samba has + been configured and compiled with the option + --with-utmp. It specifies a directory pathname that is + used to store the wtmp or wtmpx files (depending on the UNIX system) that + record user connections to a Samba server. The difference with + the utmp directory is the fact that user info is kept after a user + has logged out.

      See also the + utmp parameter. By default this is + not set, meaning the system will use whatever utmp file the + native system is set to use (usually + /var/run/wtmp on Linux).

      Default: no wtmp directory

      Example: wtmp directory = /var/log/wtmp

      WARNINGS

      Although the configuration file permits service names to contain spaces, your client software may not. Spaces will be ignored in comparisons anyway, so it shouldn't be a problem - but be aware of the possibility.

      On a similar note, many clients - especially DOS clients - -- cgit