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path: root/swat/help/parameters.html
blob: c6c1b34d0e8592d45f199f6cb3cfbe3e4b0d20a1 (plain) 
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<HTML>
<BODY>

<H1 ALIGN=CENTER>SWAT Parameters help</H1>

<hr>

<H3><A NAME="admin users">admin users (S)</A></H3>
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).<P>
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.<P>
<B>Default:</B> no admin users <P>
<B>Example:</B> admin users = jason <P>
 
<H3><A NAME="announce as">announce as (G)</A></H3>
This specifies what type of server nmbd will announce itself as in browse 
lists. By default this is set to Windows NT. The valid options are "NT", 
"Win95" or "WfW" meaining Windows NT, 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. <P>
<B>Default:</B> announce as = NT <P>
<B>Example:</B> announce as = Win95 <P>
 
<H3><A NAME="announce version">announce version (G)</A></H3>
This specifies the major and minor version numbers that nmbd will use when 
announcing itself as a server. The default is 4.2. Do not change this parameter
unless you have a specific need to set a Samba server to be a downlevel 
server. <P>
<B>Default:</B> announce version = 4.2 <P>
<B>Example:</B> announce version = 2.0 <P>
 
<H3><A NAME="alternate permissions">alternate permissions (S)</A></H3>
This option affects the way the "read only" DOS attribute is produced for 
UNIX files. If this is No then the read only bit is set for files on 
writeable shares which the user cannot write to. <P>
If this is Yes then "read only" is set for files when the user write bit is 
not set. <P>
The latter behaviour is useful when users copy files from each others 
directories, and use a file manager that preserves permissions. Without this 
option they may get annoyed as all copied files will have the "read only" 
bit set. <P>
<B>Default:</B> alternate permissions = no <P>
<B>Example:</B> alternate permissions = yes <P>
 
<H3><A NAME="available">available (S)</A></H3>
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. <P>
<B>Default:</B> available = yes <P>
<B>Example:</B> available = no <P>
 
<H3><A NAME="bind interfaces only">bind interfaces only (G)</A></H3>
This global parameter (new for 1.9.18) allows the Samba admin to limit what 
interfaces on a machine will serve smb requests. If affects file service 
(smbd) and name service (nmbd) in slightly different ways. <P>
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 
<A HREF="#interfaces">interfaces</A> 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. <P>
For file service it causes smbd to bind only to the interface list given in 
the <A HREF="#interfaces">interfaces</A> 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 intermittant or non-broadcast network interfaces as it will 
not cope with non-permanent interfaces. <P>
<B>Default:</B> bind interfaces only = No <P>
<B>Example:</B> bind interfaces only = Yes <P>
 
<H3><A NAME="browseable">browseable (S)</A></H3>
This controls whether this share is seen in the list of available shares 
in a net view and in the browse list. <P>
<B>Default:</B> browseable = Yes <P>
<B>Example:</B> browseable = No <P>

<H3><A NAME="browse list">browse list(G)</A></H3>
This controls whether the smbd will serve a browse list to a client doing a 
NetServerEnum call. Normally set to Yes. You should never need to change 
this. <P>
<B>Default:</B> browse list = Yes <P>
 
<H3><A NAME="case sensitive">case sensitive (G)</A></H3>
Controls whether filenames are case sensitive. If they aren't then Samba must 
do a filename search and match on passed names.<P>
<B>Default:</B> case sensitive = No <P>
See the discussion on <A HREF="#NAME MANGLING">NAME MANGLING</A>. <P>
 
<H3><A NAME="character set">character set (G)</A></H3>
This allows smbd to map incoming characters from a DOS 850 Code page to 
either a Western European (ISO8859-1) or Easter European (ISO8859-2) code page.
Normally not set, meaning no filename translation is done. <P>
<B>Default:</B> character set = <P>
<B>Example:</B> character set = iso8859-1 <P>
 
<H3><A NAME="client code page">client code page (G)</A></H3>
Currently (Samba 1.9.19 and above) this may be set to one of the following
values: 437, 850, 852, 866, 932, 936, 949, or 950. It specifies the base DOS 
code page that the clients accessing Samba are using. To determine this, 
open a DOS command prompt and type the command "chcp". This will output 
the code page. The default for USA MS-DOS, Windows 95, and Windows NT releases 
is code page 437. The default for western european releases of the above 
operating systems is code page 850. <P>
This parameter co-operates with the <A HREF="#valid chars">valid chars</A>
parameter in determining what characters are valid in filenames 
and how capitalization is done. It has been added as a convenience for 
clients whose code page is either 437 or 850 so a convoluted "valid chars" 
string does not have to be determined. If you set both this parameter and 
the "valid chars" parameter the "client code page" parameter MUST be 
set before the "valid chars" in the smb.conf file. The "valid chars" string 
will then augment the character settings in the "client code page" parameter. 
<P>
If "client code page" is set to a value other than those listed above, it will 
default to 850. <P>
See also : <A HREF="#valid chars">valid chars</A>. <P>
<B>Default:</B> client code page = 850 <P>
<B>Example:</B> client code page = 437 <P>
 
<H3><A NAME="coding system">coding system (G)</A></H3>
<B>Default:</B> coding system = <P>

<H3><A NAME="comment">comment (S)</A></H3>
This is a text field that is seen next to a share when a client does a net 
view to list what shares are available. <P>
If you want to set the string that is displayed next to the machine name then 
see the <A HREF="#server string">server string</A> command. <P>
<B>Default:</B> No comment string <P>
<B>Example:</B> comment = Fred's Files <P>
 
<H3><A NAME="create mask">create mask (S)</A></H3>
A synonym for this parameter is 'create mode'. <P>
When a file is created, the neccessary 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. <P>
The default value of this parameter removes the 'group' and 'other' write and 
execute bits from the UNIX modes. <P>
Following this Samba will bit-wise 'OR' the UNIX mode created from this 
parameter with the value of the 
<A HREF="#force create mode">force create mode</A> 
parameter which is set to 000 by default. <P>
For Samba 1.9.17 and above this parameter no longer affects directory modes. 
See the parameter <A HREF="#directory mask">directory mask</A> for details. <P>
See also the <A HREF="#force create mode">force create mode</A> parameter for 
forcing particular mode bits to be set on created files. See also the 
<A HREF="#directory mask">directory mask</A>
parameter for masking mode bits on created directories. <P>
<B>Default:</B> create mask = 0744 <P>
<B>Example:</B> create mask = 0775 <P>

<H3><A NAME="deadtime">deadtime (G)</A></H3>
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. <P>
This is useful to stop a server's resources being exhausted by a large number 
of inactive connections. <P>
Most clients have an auto-reconnect feature when a connection is broken so in 
most cases this parameter should be transparent to users. <P>
Using this parameter with a timeout of a few minutes is recommended for most 
systems. <P>
A deadtime of zero indicates that no auto-disconnection should be performed.<P>
<B>Default:</B> deadtime = 0 <P>
<B>Example:</B> deadtime = 15 

<H3><A NAME="default case">default case (S)</A></H3>
Controls what the default case (upper/lower) is for new filenames.<P>
See the section on <A HREF="#NAME MANGLING">NAME MANGLING</A> <P>
<B>Default:</B> default case = lower <P>
<B>Example:</B> default case = upper <P>
 
<H3><A NAME="default service">default service (G)</A></H3> A synonym for this 
parameter is 'default'. <P>
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). <P>
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. <P>
Typically the default service would be a public, read-only service. <P>
Also note that as of 1.9.14 the apparent service name will be changed to be
that of the requested service, this is very useful as it allows 
you to use macros like %S to make a wildcard service. <P>
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. <P>
<B>Example:</B> default service = pub<P>
<pre>
[pub]
	path = /%S
</pre>
 
<H3><A NAME="delete readonly">delete readonly (S)</A></H3>
This parameter allows readonly files to be deleted. This is not normal DOS 
semantics, but is allowed by UNIX. <P>
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. <P>
<B>Default:</B> delete readonly = No <P>
<B>Example:</B> delete readonly = Yes <P>

<H3><A NAME="delete veto files">delete veto files (S)</A></H3>
This option is used when Samba is attempting to delete a directory that 
contains one or more vetoed directories (see the 
<A HREF="#veto files">veto files</A> 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. <P>
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 (eg. .AppleDouble) <P>
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). <P>
<B>Default:</B> delete veto files = No <P>
<B>Example:</B> delete veto files = Yes <P>
See <A HREF="#veto files">veto files</A> <P>
 
<H3><A NAME="dfree command">dfree command (G)</A></H3>
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. <P>
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. <P>
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. <P>
Note: Your script should NOT be setuid or setgid and should be owned by 
(and writable only by) root! <P>
<B>Default:</B> By default internal routines for determining the disk capacity 
and remaining space will be used. <P>
<B>Example:</B> dfree command = /usr/local/samba/bin/dfree <P>
Where the script dfree (which must be made executable) could be <P>
<pre>
 #!/bin/sh
 df $1 | tail -1 | awk '{print $2" "$4}'
</pre>
or perhaps (on Sys V) <P>
<pre>
 #!/bin/sh
 /usr/bin/df -k $1 | tail -1 | awk '{print $3" "$5}'
</pre>
Note that you may have to replace the command names with full path names on 
some systems. <P>

<H3><A NAME="directory mask">directory mask (S)</A></H3>
A synonym for this parameter is 'directory mode'. <P>
This parameter is the octal modes which are used when converting DOS modes 
to UNIX modes when creating UNIX directories. <P>
When a directory is created, the neccessary 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. <P>
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. <P>
Following this Samba will bit-wise 'OR' the UNIX mode created from this 
parameter with the value of the 
<A HREF="#force directory mode">force directory mode</A>
parameter. This parameter is set to 000 by default (ie. no extra mode bits 
are added). <P>
See the <A HREF="#force directory mode">force directory mode</A> 
parameter to cause particular mode bits to always be set on created 
directories. <P>
See also the <A HREF="#create mask">create mask</A> parameter 
for masking mode bits on created files. <P>
<B>Default:</B> directory mask = 0755 <P>
<B>Example:</B> directory mask = 0775 <P>
 
<H3><A NAME="dns proxy">dns proxy (G)</A></H3>
Specifies that nmbd should (as a WINS server), on finding that a NetBIOS name 
has not been registered, treat the NetBIOS name word-for-word as a DNS name.<P>
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. <P>
<B>Default:</B> dns proxy = yes <P>
 
<H3><A NAME="domain admin users">domain admin users (G)</A></H3>
<P>

<H3><A NAME="domain controller">domain controller (G)</A></H3>
<h4>This is wrong</h4>
Specifies the DNS name or IP address of the machine to refer domain logons 
from Win95 machines to. You should never need to set this parameter. <P>
<B>Default:</B> domain controller = no <P>
 
<H3><A NAME="domain groups">domain groups (G)</A></H3>
<P>

<H3><A NAME="domain guest users">domain guest users (G)</A></H3>
<P>

<H3><A NAME="domain hosts allow">domain hosts allow (G)</A></H3>
<P>

<H3><A NAME="domain hosts deny">domain hosts deny (G)</A></H3>
<P>

<H3><A NAME="domain logons">domain logons (G)</A></H3>
If set to Yes, the Samba server will serve Windows 95 domain 
logons for the workgroup it is in. For more details on setting up this 
feature see the file DOMAINS.txt in the Samba source documentation directory. 
<P>
<B>Default:</B> domain logons = no <P>
 
<H3><A NAME="domain master">domain master (G)</A></H3>
Enable WAN-wide browse list collation. Local master browsers on 
broadcast-isolated subnets will give samba their local browse lists, and 
ask 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. There should only be one "domain master" for
each workgroup name.<P>
<B>Default:</B> domain master = no <P>
 
<H3><A NAME="domain other sid">domain other sid (G)</A></H3>
<P>

<H3><A NAME="domain sid">domain sid (G)</A></H3>
<P>

<H3><A NAME="dont descend">dont descend (S)</A></H3>
There are certain directories on some systems (eg., 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. <P>
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 :-) <P>
<B>Default:</B> none (i.e., all directories are OK to descend) <P>
<B>Example:</B> dont descend = /proc,/dev <P>
 
<H3><A NAME="dos filetimes">dos filetimes (S)</A></H3>
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 will change the file timstamp as DOS requires. This is a 
correct implementation of a previous compile-time options (UTIME_WORKAROUND) 
which was broken and is now removed. <P>
<B>Default:</B> dos filetimes = No <P>
<B>Example:</B> dos filetimes = Yes <P>
 
<H3><A NAME="dos filetime resolution">dos filetime resolution (S)</A></H3>
Under the DOS and Windows FAT filesystem, the finest granulatity 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. <P>
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. <P>
<B>Default:</B> dos filetime resolution = No <P>
<B>Example:</B> dos filetime resolution = Yes <P>
 
<H3><A NAME="encrypt passwords">encrypt passwords (G)</A></H3>
This boolean controls whether encrypted passwords will be negotiated with 
the client. Note that Windows NT 4.0 SP3 and above will by default expect 
encrypted passwords unless a registry entry is changed. To use encrypted 
passwords in Samba see the file docs/ENCRYPTION.txt. <P>
<B>Default:</B> encrypt passwords = No <P>
 
<H3><A NAME="exec">exec (S)</A></H3>
A synonym for this is preexec. <P>
This option specifies a command to be run whenever a connection is made to 
the service. It takes the usual substitutions. <P>
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: <P>
exec = csh -c 'echo \"Welcome to %S!\" | \ /usr/local/samba/bin/smbclient -M %m -I %I' &amp; <P>
Of course, this could get annoying after a while :-) <P>
See also <A HREF="#postexec">postexec</A> <P>
<B>Default:</B> none (no command executed) <P>
<B>Example:</B> exec = echo \"%u connected to %S from %m (%I)\" &gt;&gt; /tmp/log <P>

 
<H3><A NAME="fake directory create times">fake directory create times (S)</A></H3>
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. <P>
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. <P>
However, Unix time semantics mean that the create time reported by Samba 
will be updated whenever a file is created or deleted in the directory. 
NMAKE therefore finds all object files in the object directory bar the last 
one built are out of date compared to the directory and rebuilds them. 
Enabling this option ensures directories always predate their contents and 
an NMAKE build will proceed as expected. <P>
<B>Default:</B> fake directory create times = No <P>
<B>Example:</B> fake directory create times = Yes <P>
 
<H3><A NAME="fake oplocks">fake oplocks (S)</A></H3>
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. <P>
When you set "fake oplocks = yes" Samba will always grant oplock requests 
no matter how many clients are using the file. <P>
By enabling this option on all read-only shares or shares that you know 
will only be accessed from one client at a time 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! <P>
It is generally much better to use the real oplock support except for 
physically read-only media such as CDROMs. <P>
<B>Default:</B>  fake oplocks = No <P>
<B>Example:</B>  fake oplocks = Yes <P>
 
<H3><A NAME="follow symlinks">follow symlinks (S)</A></H3>
This parameter allows the Samba administrator to stop smbd 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/pasword in their home directory for instance. 
However it will slow filename lookups down slightly. <P>
<B>Default:</B> follow symlinks = Yes (smbd will follow symbolic links)<P>

<H3><A NAME="force create mode">force create mode (S)</A></H3>
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. The modes in this 
parameter are bitwise 'OR'ed onto the file mode after the mask set in the 
<A HREF="#create mask">create mask</A> parameter is applied. <P>
See also the parameter <A HREF="#create mask">create mask</A> for details 
on masking mode bits on created files. <P>
<B>Default:</B> force create mode = 000 <P>
<B>Example:</B> force create mode = 0755 <P>
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'. <P>
 
<H3><A NAME="force directory mode">force directory mode (S)</A></H3>
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 octel) 0000 which will not add any extra permission bits 
to a created directory. This operation is done after the mode mask in the 
parameter <A HREF="#directory mask">directory mask</A> is applied. <P>
See also the parameter <A HREF="#directory mask">directory mask</A>
for details on masking mode bits on created directories. <P>
<B>Default:</B> force directory mode = 000 <P>
<B>Example:</B> force directory mode = 0755 <P>
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'. <P>
 
<H3><A NAME="force group">force group (S)</A></H3>
This specifies a group name that all connections to this service should be 
made as. This may be useful for sharing files. <P>
<B>Default:</B> no forced group <P>
<B>Example:</B> force group = agroup <P>
 
<H3><A NAME="force user">force user (S)</A></H3>
This specifies a user name that all connections to this service should be 
made as. This may be useful for sharing files. You should also use it 
carefully as using it incorrectly can cause security problems. <P>
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. <P>
<B>Default:</B> no forced user <P>
<B>Example:</B> force user = auser <P>
 
<H3><A NAME="getwd cache">getwd cache (G)</A></H3>
This is a tuning option. When this is enabled a cacheing algorithm will be 
used to reduce the time taken for getwd() calls. This can have a significant 
impact on performance, especially when widelinks is No. <P>
<B>Default:</B>getwd cache = No <P>
<B>Example:</B>getwd cache = Yes <P>
 
<H3><A NAME="guest account">guest account (S)</A></H3>
This is a username which will be used for access to services which are 
specified as <A HREF="#guest ok">guest ok</A>.  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. If a username is specified in a given service, the specified 
username overrides this one. <P>
One some systems the 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 
<B>lpr</B>. <P>
Note that as of version 1.9 of Samba this option may be set differently 
for each service. <P>
<B>Default:</B>specified at compile time <P>
<B>Example:</B>guest account = nobody 

<H3><A NAME="guest ok">guest ok (S)</A></H3>
A synonym for this parameter is 'public'. <P>
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. <P>
See the section below on 
<A HREF="#USERNAME/PASSWORD VALIDATION">USERNAME/PASSWORD VALIDATION</A>
for more information about this option. <P>
<B>Default:</B> guest ok = No <P>
<B>Example:</B> guest ok = Yes 

<H3><A NAME="guest only">guest only (S)</A></H3>
If this parameter is 'Yes' for a service, then only guest connections to the 
service are permitted. This parameter will have no affect if
<A HREF="#guest ok">guest ok</A> is not set for the service. <P>
See the section below on 
<A HREF="#USERNAME/PASSWORD VALIDATION">USERNAME/PASSWORD VALIDATION</A> for 
more information about this option. <P>
<B>Default:</B> guest only = No <P>
<B>Example:</B> guest only = Yes 

<H3><A NAME="hide dot files">hide dot files (S)</A></H3>
This is a boolean parameter that controls whether files starting with a dot 
appear as hidden files. <P>
<B>Default:</B> hide dot files = Yes <P>
<B>Example:</B> hide dot files = No <P>
 
<H3><A NAME="hide files">hide files (S)</A></H3>
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.<P>
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. <P>
Each entry must be a unix path, not a DOS path and must not include the unix 
directory separator "/". <P>
Note that the case sensitivity option is applicable in hiding files. <P>
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.<P>
See also <A HREF="#hide dot files">hide dot files</A>, 
<A HREF="#veto files">veto files</A> and 
<A HREF="#case sensitive">case sensitive</A> <P>
<B>Default</B> No files or directories are hidden by this option 
(dot files are hidden by default because of the "hide dot files" option). <P>
<B>Example</B> hide files = /.*/DesktopFolderDB/TrashFor%m/resource.frk/ <P>
The above example is based on files that the Macintosh client (DAVE) creates 
for internal use, and also still hides all files beginning with a dot. <P>
 
<H3><A NAME="homedir map">homedir map (G)</A></H3>
If <A HREF="#NIS homedir">NIS homedir</A> is Yes, 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: <P>
&nbsp;&nbsp;&nbsp;&nbsp;username server:/some/file/system <P>
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. <P>
NB: The -DNETGROUP option is required in the Makefile for option 
to work and on some architectures the line -lrpcsvc needs to be added to 
the LIBSM variable. This is required for Solaris 2, FreeBSD and HPUX. <P>
See also <A HREF="#NIS homedir">NIS homedir</A> <P>
<B>Default:</B> homedir map = auto.home <P>
<B>Example:</B> homedir map = amd.homedir 

<H3><A NAME="hosts allow">hosts allow (S)</A></H3>
A synonym for this parameter is 'allow hosts'. <P>
This parameter is a comma delimited set of hosts which are permitted to access 
a service. <P>
If specified in the [global] section then it will apply to all services, 
regardless of whether the individual service has a different setting. <P>
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 
"hosts allow = 150.203.5.". <P>
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: <P>
Example 1: allow all IPs in 150.203.*.* except one <P>
&nbsp;&nbsp;hosts allow = 150.203. EXCEPT 150.203.6.66 <P>
Example 2: allow hosts that match the given network/netmask <P>
&nbsp;&nbsp;hosts allow = 150.203.15.0/255.255.255.0 <P>
Example 3: allow a couple of hosts <P>
&nbsp;&nbsp;hosts allow = lapland, arvidsjaur <P>
Example 4: allow only hosts in netgroup "foonet" or localhost, but deny 
access from one particular host <P>
&nbsp;&nbsp;hosts allow = @foonet, localhost<P>
&nbsp;&nbsp;hosts deny = pirate <P>
Note that access still requires suitable user-level passwords. <P>
See <B>testparm</B>(1) for a way of testing your host access to see if it 
does what you expect. <P>
<B>Default:</B> none (i.e., all hosts permitted access) <P>
<B>Example:</B> hosts allow = 150.203.5. myhost.mynet.edu.au<P>
 
<H3><A NAME="hosts deny">hosts deny (S)</A></H3>
A synonym for this parameter is 'deny hosts'. <P>
This is the opposite of <A HREF="#hosts allow">hosts allow</A> - 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. <P>
<B>Default:</B> none (i.e., no hosts specifically excluded) <P>
<B>Example:</B>hosts deny = 150.203.4. badhost.mynet.edu.au <P>
 
<H3><A NAME="hosts equiv">hosts equiv (G)</A></H3>
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. <P>
This is not be confused with <A HREF="#hosts allow">hosts allow</A> which is 
about hosts access to services and is more useful for guest services. 
<B>hosts equiv</B> may be useful for NT clients which will not supply 
passwords to samba. <P>
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 wife and kids :-) <P>
<B>Default</B> No host equivalences <P>
<B>Example</B> hosts equiv = /etc/hosts.equiv <P>
 
<H3><A NAME="include">include (G)</A></H3>
This allows you to include one config file 
inside another. The file is included literally, as though typed in place. <P>
It takes the standard substitutions, except %u, %P and %S <P>
 
<H3><A NAME="interfaces">interfaces (G)</A></H3>
This option allows you to setup multiple network interfaces, so that 
Samba can properly handle browsing on all interfaces. <P>
The option takes a list of ip/netmask pairs. The netmask may either be a 
bitmask, or a bitlength. <P>
For example, the following line: <P>
&nbsp;&nbsp;interfaces = 192.168.2.10/24 192.168.3.10/24 <P>
would configure two network interfaces with IP addresses 192.168.2.10 and 
192.168.3.10. The netmasks of both interfaces would be set to 255.255.255.0.<P>
You could produce an equivalent result by using: <P>
&nbsp;&nbsp;interfaces = 192.168.2.10/255.255.255.0 192.168.3.10/255.255.255.0<P>
if you prefer that format. <P>
If this option is not set then Samba will attempt to find a primary interface, 
but won't attempt to configure more than one interface. <P>
 
<H3><A NAME="invalid users">invalid users (S)</A></H3>
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. <P>
A name starting with @ is interpreted as a UNIX group. <P>
The current servicename is substituted for %S. This is useful in the [homes] 
section. <P>
See also <A HREF="#valid users">valid users</A> <P>
<B>Default</B> No invalid users <P>
<B>Example</B> invalid users = root fred admin @wheel <P>
 
<H3><A NAME="keepalive">keepalive (G)</A></H3>
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. <P>
<B>Default:</B> keep alive = 300 <P>
<B>Example:</B> keep alive = 60 <P>
 
<H3><A NAME="lm announce">lm announce (G)</A></H3>
This parameter determines if Samba 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, True, False, or Auto. 
The default is Auto. If set to False Samba will never produce these broadcasts.
If set to True Samba will produce Lanman announce broadcasts at a frequency 
set by the parameter <A HREF="#lm interval">lm interval</A>. 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 'lm interval' parameter<P>
See also <A HREF="#lm interval">lm interval</A>. <P>
<B>Default:</B> lm announce = Auto <P>
<B>Example:</B> lm announce = True <P>
 
<H3><A NAME="lm interval">lm interval (G)</A></H3>
If Samba is set to produce Lanman announce broadcasts needed by OS/2 clients 
(see the <A HREF="#lm announce">lm announce</A> parameter) 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 <A HREF="#lm announce">lm announce</A> parameter. <P>
See also <A HREF="#lm announce">lm announce</A>. <P>
<B>Default:</B> lm interval = 60 <P>
<B>Example:</B>  lm interval = 120 <P>
 
<H3><A NAME="load printers">load printers (G)</A></H3>
A boolean variable that controls whether all printers in the printcap 
will be loaded for browsing by default. <P>
<B>Default:</B> load printers = Yes <P>
<B>Example:</B> load printers = No <P>
 
<H3><A NAME="local master">local master (G)</A></H3>
This option allows nmbd to 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 the nmbd will participate in elections 
for local master browser. <P>
<B>Default:</B> local master = yes <P>
 
<H3><A NAME="lock dir">lock dir (G)</A></H3>
This option specifies the directory where lock files will be placed. 
The lock files are used to implement the 
<A HREF="#max connections">max connections</A> option. <P>
<B>Default:</B> lock dir = /tmp/samba <P>
<B>Example:</B> lock dir = /usr/local/samba/var/locks <P>
 
<H3><A NAME="locking">locking (S)</A></H3>
This controls whether or not locking will be performed by the server in 
response to lock requests from the client. <P>
If set to No, all lock and unlock requests will appear to succeed and all 
lock queries will indicate that the queried lock is clear. <P>
If set to Yes, real locking will be performed by the server. <P>
This option may be particularly useful for read-only filesystems which do not 
need locking (such as CDROM drives). <P>
Be careful about disabling locking either globally or in a specific 
service, as lack of locking may result in data corruption. <P>
<B>Default:</B> locking = Yes <P>
<B>Example:</B> locking = No <P>
 
<H3><A NAME="log file">log file (G)</A></H3>
This options allows you to override the name of the Samba log file (also 
known as the debug file). <P>
This option takes the standard substitutions, allowing you to have separate 
log files for each user or machine. <P>
<B>Example:</B> log file = /usr/local/samba/var/log.%m <P>
 
<H3><A NAME="log level">log level (G)</A></H3>
A synonym for this is debuglevel<P>
The value of the parameter (an integer) allows the logging level (debug level) 
to be specified in the <B>smb.conf</B> file. This is to give greater 
flexibility in the configuration of the system. <P>
The default will be the logging level specified on the command line. <P>
<B>Example:</B> log level = 3 

<H3><A NAME="logon drive">logon drive (G)</A></H3>
This parameter specifies the local path to which the home directory will be 
connected (see <A HREF="#logon home">logon home</A>) and is only used by NT 
Workstations. <P>
<B>Example:</B> logon drive = h: <P>
 
<H3><A NAME="logon home">logon home (G)</A></H3>
This parameter specifies the home directory location when a Win95 or NT 
Workstation logs into a Samba PDC. It allows you to do "NET USE H: /HOME" 
from a command prompt, for example. <P>
This option takes the standard substitutions, allowing you to have separate 
logon scripts for each user or machine. <P>
<B>Default:</B> logon home = "\\%N\%U" <P>
<B>Example:</B> logon home = "\\remote_smb_server\%U" <P>
 
<H3><A NAME="logon path">logon path (G)</A></H3>
This parameter specifies the home directory where roaming profiles (USER.DAT 
/ USER.MAN files for Windows 95) are stored. <P>
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 "desktop", "start menu", "nethood" and "programs" folders, and their 
contents, are loaded and displayed on your Windows 95 client. <P>
The share and the path must be readable by the user for the preferences and 
directories to be loaded onto the Windows 95 client. The share must be 
writeable when the user logs in for the first time, in order that the 
Windows 95 client can create the user.dat and other directories. <P>
Thereafter, the directories and any of contents can, if required, be 
made read-only. It is not adviseable that the USER.DAT file be made read-only 
- rename it to USER.MAN to achieve the desired effect (a MANdatory profile). <P>
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 
\\%N\HOMESprofile_path will cause problems). <P>
This option takes the standard substitutions, allowing you to have separate 
logon scripts for each user or machine. <P>
<B>Default:</B> logon path = \\%N\%U\profile <P>
<B>Example:</B> logon path = \\PROFILESERVER\HOME_DIR\%U\PROFILE <P>
 
<H3><A NAME="logon script">logon script (G)</A></H3>
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. <P>
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 file that will be downloaded is: <P>
&nbsp;&nbsp;<B>/usr/local/samba/netlogon/STARTUP.BAT</B> <P>
The contents of the batch file is entirely your choice. A suggested command 
would be to add NET TIME \\SERVER /SET /YES, to force every machine to 
synchronise 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. <P>
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. <P>
This option takes the standard substitutions, allowing you to have separate 
logon scripts for each user or machine. <P>
<B>Example:</B> logon script = scripts/%U.bat <P>
 
<H3><A NAME="lppause command">lppause command (S)</A></H3>
This parameter specifies the command to be executed on the server host in 
order to stop printing or spooling a specific print job. <P>
This command should be a program or script which takes a printer name and 
job number to pause the print job. Currently I don't know of any print spooler 
system that can do this with a simple option, except for the PPR system from 
Trinity College (ppr-dist.trincoll.edu/pub/ppr). One way of implementing this 
is by using job priorities, where jobs having a too low priority won't be 
sent to the printer. See also 
<A HREF="#lpresume command">lpresume command</A>.<P>
If a %p is given then the printername is put in its place. A %j is replaced 
with the job number (an integer). On HPUX (see 
<A HREF="#printing">printing</A>=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. <P>
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. <P>
<B>Default:</B>  Currently no default value is given to this string <P>
<B>Example for HPUX:</B>  lppause command = /usr/bin/lpalt %p-%j -p0 <P>
 
<H3><A NAME="lpq cache time">lpq cache time (G)</A></H3>
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. <P>
The cache files are stored in /tmp/lpq.xxxx where xxxx is a hash of the lpq 
command in use. <P>
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. <P>
A value of 0 will disable cacheing completely. <P>
<B>Default:</B> lpq cache time = 10 <P>
<B>Example:</B> lpq cache time = 30 <P>
 
<H3><A NAME="lpq command">lpq command (S)</A></H3>
This parameter specifies the command to be executed on the server host 
in order to obtain "lpq"-style printer status information. <P>
This command should be a program or script which takes a printer name as its 
only parameter and outputs printer status information. <P>
Currently six styles of printer status information are supported; BSD, SYSV, 
AIX, HPUX, QNX, LPRNG and PLP. This covers most UNIX systems. You control 
which type is expected using the <A HREF="#printing">printing</A> option. <P>
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. <P>
If a %p is given then the printername is put in its place. Otherwise it is 
placed at the end of the command. <P>
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. <P>
<B>Default:</B> depends on the setting of <A HREF="#printing">printing</A><P>
<B>Example:</B> lpq command = /usr/bin/lpq %p <P>
 
<H3><A NAME="lpresume command">lpresume command (S)</A></H3>
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. <P>
This command should be a program or script which takes a printer name and 
job number to resume the print job. See also the 
<A HREF="#lppause command">lppause command</A>. <P>
If a %p is given then the printername is put in its place. 
A %j is replaced with the job number (an integer). <P>
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. <P>
<B>Default:</B>  Currently no default value is given to this string <P>
<B>Example for HPUX:</B>  lpresume command = /usr/bin/lpalt %p-%j -p2 <P>
 
<H3><A NAME="lprm command">lprm command (S)</A></H3>
This parameter specifies the command to be executed on the server host in 
order to delete a print job. <P>
This command should be a program or script which takes a printer name 
and job number, and deletes the print job. <P>
Currently seven styles of printer control are supported; BSD, SYSV, AIX HPUX, 
QNX, LPRNG and PLP. This covers most UNIX systems. You control which type is 
expected using the <A HREF="#printing">printing</A> option. <P>
If a %p is given then the printername is put in its place. A 
%j is replaced with the job number (an integer). <P>
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. <P>
<B>Default:</B>  depends on the setting of <A HREF="#printing">printing</A><P>
<B>Example 1:</B>lprm command = /usr/bin/lprm -P%p %j <P>
<B>Example 2:</B>lprm command = /usr/bin/cancel %p-%j <P>
 
<H3><A NAME="magic output">magic output (S)</A></H3>
This parameter specifies the name of a file which will contain output 
created by a magic script (see <A HREF="#magic script">magic script</A> 
below). <P>
Warning: If two clients use the same magic script in the same directory the 
output file content is undefined. <P>
<B>Default:</B> magic output = &lt;magic script name&gt;.out <P>
<B>Example:</B> magic output = myfile.txt <P>

<H3><A NAME="magic script">magic script (S)</A></H3>
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. <P>
Scripts executed in this way will be deleted upon completion, permissions 
permitting. <P>
If the script generates output, output will be sent to the file specified by 
the <A HREF="#magic output">magic output</A> parameter. <P>
Note that some shells are unable to interpret scripts containing 
carriage-return-linefeed instead of linefeed 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. <P>
Magic scripts are EXPERIMENTAL and should NOT be relied upon. <P>
<B>Default:</B> None. Magic scripts disabled. <P>
<B>Example:</B> magic script = user.csh <P>
 
<H3><A NAME="mangle case">mangle case (S)</A></H3>
Controls if names that have characters that aren't of the "default" case are 
mangled. <P>
See the section on <A HREF="#NAME MANGLING">NAME MANGLING</A> <P>
 
<H3><A NAME="mangled map">mangled map (S)</A></H3>
This is for those who want to directly map UNIX file names which are not 
representable on 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 DOS .htm is more commonly used. <P>
So to map 'html' to 'htm' you put: <P>
mangled map = (*.html *.htm) <P>
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 *) <P>
<B>default:</B> no mangled map <P>
<B>Example:</B> mangled map = (*;1 *) <P>
 
<H3><A NAME="mangled names">mangled names (S)</A></H3>
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. <P>
See the section on <A HREF="#NAME MANGLING">NAME MANGLING</A> for 
details on how to control the mangling process. <P>
If mangling is used then the mangling algorithm is as follows: 
<blockquote>- 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. <P>
- 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. <P>
Note that the character to use may be specified using the 
<A HREF="#mangling char">mangling char</A> option, if you don't like ~. <P>
- 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). <P>
- 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). 
</blockquote>
The two-digit hash value consists of upper case alphanumeric characters. <P>
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. <P>
The name mangling (if enabled) allows a file to be copied between UNIX 
directories from DOS while retaining the long UNIX filename. UNIX files can 
be renamed to a new extension from DOS and will retain the same basename. 
Mangled names do not change between sessions. <P>
<B>Default:</B> mangled names = Yes <P>
<B>Example:</B> mangled names = No <P>

<H3><A NAME="mangling char">mangling char (S)</A></H3>
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. <P>
<B>Default:</B> mangling char = ~ <P>
<B>Example:</B> mangling char = ^ <P>
 
<H3><A NAME="mangled stack">mangled stack (G)</A></H3>
This parameter controls the number of mangled names that should be cached in 
the Samba server. <P>
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). <P>
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 access. Smaller stacks save 
memory in the server (each stack element costs 256 bytes). <P>
It is not possible to absolutely guarantee correct long file names, so be 
prepared for some surprises! <P>
<B>Default:</B> mangled stack = 50 <P>
<B>Example:</B> mangled stack = 100 <P>
 
<H3><A NAME="map archive">map archive (S)</A></H3>
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... <P>
Note that this requires the 'create mask' to be set such 
that owner execute bit is not masked out (ie. it must include 100). See 
the parameter <A HREF="#create mask">create mask</A> for details. <P>
<B>Default:</B> map archive = Yes <P>
<B>Example:</B> map archive = No <P>
 
<H3><A NAME="map hidden">map hidden (S)</A></H3>
This controls whether DOS style hidden files should be mapped to the UNIX 
world execute bit. <P>
Note that this requires the 'create mask' to be set such that the world 
execute bit is not masked out (ie. it must include 001). See the parameter 
<A HREF="#create mask">create mask</A> for details. <P>
<B>Default:</B> map hidden = No <P>
<B>Example:</B> map hidden = Yes <P>

<H3><A NAME="map system">map system (S)</A></H3>
This controls whether DOS style system files should be mapped to the UNIX 
group execute bit. <P>
Note that this requires the 'create mask' to be set such that the group 
execute bit is not masked out (ie. it must include 010). See the parameter 
<A HREF="#create mask">create mask</A> for details. <P>
<B>Default:</B> map system = No <P>
<B>Example:</B> map system = Yes <P>

<H3><A NAME="max connections">max connections (S)</A></H3>
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. <P>
Record lock files are used to implement this feature. The lock files will be 
stored in the directory specified by the 
<A HREF="#lock dir">lock dir</A> option. <P>
<B>Default:</B> max connections = 0 <P>
<B>Example:</B> max connections = 10 <P>
 
<H3><A NAME="max disk size">max disk size (G)</A></H3>
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. <P>
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". <P>
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. <P>
A "max disk size" of 0 means no limit. <P>
<B>Default:</B> max disk size = 0 <P>
<B>Example:</B> max disk size = 1000 <P>
 
<H3><A NAME="max log size">max log size (G)</A></H3>
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. <P>
A size of 0 means no limit. <P>
<B>Default:</B> max log size = 5000 <P>
<B>Example:</B> max log size = 1000 <P>
 
<H3><A NAME="max mux">max mux (G)</A></H3>
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. <P>
<B>Default:</B> max mux = 50 <P>
 
<H3><A NAME="max packet">max packet (G)</A></H3>
A synonym for this parameter is 'packet size'. <P>
The maximum transmit packet size during a raw read. This option is no longer 
implemented as of version 1.7.00, and is kept only so old configuration files 
do not become invalid. <P>
 
<H3><A NAME="max ttl">max ttl (G)</A></H3>
This option tells nmbd what the default 'time to live' of NetBIOS names should 
be (in seconds) when nmbd is requesting a name using either a broadcast 
or from a WINS server. You should never need to change this parameter. <P>
<B>Default:</B> max ttl = 14400 <P>
 
<H3><A NAME="max wins ttl">max wins ttl (G)</A></H3>
This option tells nmbd when acting as a WINS server 
(<A HREF="#wins support">wins support</A> = 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 3 days (259200 
seconds). <P>
<B>Default:</B>  max wins ttl = 259200 <P>
 
<H3><A NAME="max xmit">max xmit (G)</A></H3>
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. <P>
<B>Default:</B> max xmit = 65535 <P>
<B>Example:</B> max xmit = 8192 <P>
 
<H3><A NAME="message command">message command (G)</A></H3>
This specifies what command to run when the server receives a WinPopup style 
message. <P>
This would normally be a command that would deliver the message somehow. 
How this is to be done is up to your imagination. <P>
What I use is: <P>
message command = csh -c 'xedit %s;rm %s' &amp; <P>
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 &amp; on the end. If it doesn't return immediately then your PCs may 
freeze when sending messages (they should recover after 30secs, hopefully). <P>
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). <P>
Apart from the standard substitutions, some additional ones apply. In 
particular: <P>
%s = the filename containing the message <P>
%t = the destination that the message was sent to (probably the server name) <P>
%f = who the message is from <P>
You could make this command send mail, or whatever else takes your fancy. 
Please let me know of any really interesting ideas you have. <P>
Here's a way of sending the messages as mail to root: <P>
message command = /bin/mail -s 'message from %f on %m' root &lt; %s; rm %s <P>
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. <P>
If you want to silently delete it then try "message command = rm %s". <P>
For the really adventurous, try something like this: <P>
message command = csh -c 'csh &lt; %s |&amp; /usr/local/samba/bin/smbclient \   
 -M %m; rm %s' &amp; <P>
this would execute the command as a script on the server, 
then give them the result in a WinPopup message. Note that this could cause 
a loop if you send a message from the server using smbclient! You better 
wrap the above in a script that checks for this :-) <P>
<B>Default:</B> no message command <P>
<B>Example:</B> message command = csh -c 'xedit %s;rm %s' &amp; <P>
 
<H3><A NAME="min print space">min print space (S)</A></H3>
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 no limit. <P>
<B>Default:</B> min print space = 0 <P>
<B>Example:</B> min print space = 2000 <P>
 
<H3><A NAME="min wins ttl">min wins ttl (G)</A></H3>
This option tells nmbd when acting as a WINS server 
(<A HREF="#wins support">wins support</A> = 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). <P>
<B>Default:</B> min wins ttl = 21600 <P>
 
<H3><A NAME="name resolve order">name resolve order (G)</A></H3>
This option is used by the programs smbd, nmbd and smbclient 
to determine what naming services and in what order to resolve host names 
to IP addresses. This option is most useful in smbclient. The option takes 
a space separated string of different name resolution options. These are 
"lmhosts", "host", "wins" and "bcast". They cause names to be resolved 
as follows : <P>
<pre>
lmhosts	Lookup an IP address in the Samba lmhosts file.
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 Solaris 
	this may be controlled by the /etc/nsswitch.conf file). 
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.
</pre>
The default order is lmhosts, host, wins, bcast and these name resolution 
methods will be attempted in this order. <P>
This option was first introduced in Samba 1.9.18p4. <P>
<B>Default:</B> name resolve order = lmhosts host wins bcast <P>
<B>example:</B>	name resolve order = lmhosts bcast host <P>
This will cause the local lmhosts file to be examined first, followed by a 
broadcast attempt, followed by a normal system hostname lookup. <P>
 
<H3><A NAME="netbios aliases">netbios aliases (G)</A></H3>
This is a list of names that nmbd 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. <P>
See also <A HREF="#netbios name">netbios name</A>. <P>
<B>Example:</B>netbios aliases = TEST TEST1 TEST2 <P>
 
<H3><A NAME="netbios name">netbios name (G)</A></H3>
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. <P>
See also <A HREF="#netbios aliases">netbios aliases</A>. <P>
<B>Example:</B> netbios name = MYNAME <P>
 
<H3><A NAME="NIS homedir">NIS homedir (G)</A></H3>
Get the home share server from a NIS (or YP) 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, two network hops are required to access 
the home directory and this can be very slow especially with writing via 
Samba to an NFS mounted directory. 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 (or YP) map 
specified in <A HREF="#homedir map">homedir map</A> and return the server 
listed there. <P>
<B>Default:</B> NIS homedir = No <P>
<B>Example:</B> NIS homedir = Yes <P>
 
<H3><A NAME="networkstation user login">networkstation user login (G)</A></H3>
This global parameter (new for 1.9.18p3) affects server level security. With 
this set (recommended) samba will do a full NetWkstaUserLogon to confirm that 
the client really should have login rights. This can cause problems with 
machines in trust relationships in which case you can disable it here, 
but be warned, we have heard that some NT machines will then allow anyone 
in with any password! Make sure you test it. <P>
<B>Default:</B> networkstation user login = Yes <P>
<B>Example:</B> networkstation user login = No <P>
 
<H3><A NAME="null passwords">null passwords (G)</A></H3>
Allow or disallow access to accounts that have null passwords. <P>
<B>Default:</B> null passwords = No <P>
<B>Example:</B> null passwords = Yes <P>
 
<H3><A NAME="only user">only user (S)</A></H3>
This is a boolean option that controls whether connections with usernames not 
in the <A HREF="#username">username</A> list will be allowed. By default this 
option is disabled so a client can supply a username to be used by the 
server. <P>
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 "<A HREF="#username">username</A> = %S" which means your 
"username" list will be just the service name, which for home directories 
is the name of the user. <P>
<B>Default: </B> only user = No <P>
<B>Example: </B> only user = Yes <P>
 
<H3><A NAME="oplocks">oplocks (S)</A></H3>
This boolean option tells smbd whether to issue oplocks (opportunistic locks) 
to file open requests on this share. The oplock code 
was introduced in Samba 1.9.18 and can dramatically (approx 30% or more) 
improve the speed of access to files on Samba servers. It allows the clients 
to agressively 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. <P>
Oplocks may be selectively turned off on certain files on a per share basis. 
See the <A HREF="#veto oplock files">veto oplock files</A> parameter. <P>
<B>Default:</B> oplocks = Yes <P>
<B>Example:</B> oplocks = No <P>
 
<H3><A NAME="os level">os level (G)</A></H3>
This integer value controls what level Samba advertises itself as for browse 
elections. See BROWSING.txt for details. <P>
 
<H3><A NAME="passwd chat debug">passwd chat debug (G)</A></H3>
<B>Default: </B> passwd chat debug = No <P>

<H3><A NAME="passwd chat">passwd chat (G)</A></H3>
This string controls the "chat" conversation that takes places 
between smbd and the local password changing program to change the users 
password. The string describes a sequence of response-receive pairs that 
smbd 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. <P>
This chat sequence is often quite site specific, depending 
on what local methods are used for password control (such as NIS+ etc). <P>
The string can contain the macros %o and %n which are substituted for 
the old and new passwords respectively. It can also contain the standard 
macros \n \r \t and \s to give line-feed, carriage-return, tab and space. <P>
The string can also contain a * which matches any sequence of characters. <P>
Double quotes can be used to collect strings with spaces in them into 
a single string. <P>
If the send string in any part of the chat sequence is 
a fullstop "." then no string is sent. Similarly, is the expect string is 
a fullstop then no string is expected. <P>
<B>Default:</B> passwd chat = *old*password* %o\n *new*password* %n\n *new*password* %n\n *changed* <P>
<B>Example:</B>  passwd chat = "*Enter OLD password*" %o\n "*Enter NEW password*" %n\n \   
 "*Reenter NEW password*" %n\n "*Password changed*" <P>
 
<H3><A NAME="passwd program">passwd program (G)</A></H3>
The name of a program that can be used to set user passwords. <P>
This is only necessary if you have enabled remote password changing at 
compile time. Any occurrences of %u will be replaced with the user name. <P>
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. <P>
<B>Default:</B> passwd program = /bin/passwd <P>
<B>Example:</B> passwd program = /sbin/passwd %u <P>
 
<H3><A NAME="password level">password level (G)</A></H3>
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! <P>
This parameter defines the maximum number of characters that may be upper 
case in passwords. <P>
For example, say the password given was "FRED". If password level is set to 
1 (one), the following combinations would be tried if "FRED" failed: "Fred", 
"fred", "fRed", "frEd", "freD". If password level was set to 2 (two), the 
following combinations would also be tried: "FRed", "FrEd", "FreD", "fREd", 
"fReD", "frED". And so on. <P>
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. <P>
A value of zero will cause only two attempts to be made - the password 
as is and the password in all-lower case. <P>
If you find the connections are taking too long with this option then you 
probably have a slow crypt() routine. Samba now comes with a fast "ufc crypt" 
that you can select in the Makefile. You should also make sure the 
PASSWORD_LENGTH option is correct for your system in local.h and includes.h. 
On most systems only the first 8 chars of a password are significant so 
PASSWORD_LENGTH should be 8, but on some longer passwords are significant. 
The includes.h file tries to select the right length for your system. <P>
<B>Default:</B> password level = 0 <P>
<B>Example:</B> password level = 4 <P>
 
<H3><A NAME="password server">password server (G)</A></H3>
By specifying the name of another SMB server (such as a WinNT box) with this 
option, and using "<A HREF="#security">security</A> = server" you can get 
Samba to do all its username/password validation via a remote server. <P>
This options 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 /etc/hosts. <P>
Note that with Samba 1.9.18p4 and above the name of the password server is 
looked up using the <A HREF="#name resolve order">name resolve order</A> 
parameter and so may resolved by any method and order described in that 
parameter. <P>
The password server much be a machine capable of using the "LM1.2X002" 
or the "LM NT 0.12" protocol, and it must be in user level security mode. <P>
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. <P>
Never point a Samba server at itself for password serving. This will cause a 
loop and could lock up your Samba server! <P>
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 better restrict them with 
<A HREF="#hosts allow">hosts allow</A>! <P>
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. <P>
If you are using a WindowsNT server as your password server then you will 
have to ensure that your users are able to login from the Samba server, as 
the network logon will appear to come from there rather than from the users 
workstation. <P>
 
<H3><A NAME="path">path (S)</A></H3>
A synonym for this parameter is "directory". <P>
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. <P>
For a printable service offering guest access, the service should be readonly 
and the path should be world-writable 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. <P>
Any occurrences of %u in the path will be replaced with the username that the 
client is connecting as. Any occurrences of %m will be replaced by the name 
of the machine they are connecting from. These replacements are very useful 
for setting up pseudo home directories for users. <P>
Note that this path will be based on 
<A HREF="#root directory">root directory</A> if one was specified.<P>
<B>Default:</B> none <P>
<B>Example:</B> path = /home/fred <P>
 
<H3><A NAME="postexec">postexec (S)</A></H3>
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. <P>
An interesting example may be do unmount server resources: <P>
postexec = /etc/umount /cdrom <P>
See also <A HREF="#preexec">preexec</A> <P>
<B>Default:</B> none (no command executed) <P>
<B>Example:</B> postexec = echo \"%u disconnected from %S from %m (%I)\" &gt;&gt; /tmp/log <P>
 
<H3><A NAME="postscript">postscript (S)</A></H3>
This parameter forces a printer to interpret the print files as postscript. 
This is done by adding a %! to the start of print output. <P>
This is most useful when you have lots of PCs that persist in putting a 
control-D at the start of print jobs, which then confuses your printer. <P>
<B>Default:</B> postscript = No <P>
<B>Example:</B> postscript = Yes <P>
 
<H3><A NAME="preferred master">preferred master (G)</A></H3>
This boolean parameter controls if Samba is a preferred master browser for 
its workgroup. If this is set to Yes, on startup, samba 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 
<A HREF="#domain master">domain master</A> = yes, so that samba can guarantee 
becoming a domain master.  <P>
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. <P>
See <A HREF="#os level">os level</A> = nn <P>
<B>Default:</B> preferred master = no <P>
 
<H3><A NAME="preload">preload</A></H3>
An alias is "auto services".  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. <P>
Note that if you just want all printers in your printcap file loaded then the 
<A HREF="#load printers">load printers</A> option is easier. <P>
<B>Default:</B> no preloaded services <P>
<B>Example:</B> preload = fred lp colorlp <P>
 
<H3><A NAME="preserve case">preserve case (S)</A></H3>
This controls if new filenames are created with the case that 
the client passes, or if they are forced to be the "default" case. <P>
<B>Default:</B> preserve case = no <P>
See the section on <A HREF="#NAME MANGLING">NAME MANGLING</A> for a fuller 
discussion. <P>
 
<H3><A NAME="print command">print command (S)</A></H3>
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. <P>
The print command is simply a text string. It will be used verbatim, with 
two exceptions: All occurrences of "%s" will be replaced by the appropriate 
spool file name, and all occurrences of "%p" will be replaced by the 
appropriate printer name. The spool file name is generated automatically by 
the server, the <A HREF="#printer name">printer name</A> is discussed below. <P>
The full path name will be used for the filename if %s is not preceded by a 
/. If you don't like this (it can stuff up some lpq output) then use %f 
instead. Any occurrences of %f get replaced by the spool filename without 
the full path at the front. <P>
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. <P>
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.<P>
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. <P>
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 
<A HREF="#guest account">guest account</A> in the [global] section. <P>
You can form quite complex print commands by realising 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. <P>
print command = echo Printing %s &gt;&gt; /tmp/print.log; lpr -P %p %s; rm %s<P>
You may have to vary this command considerably depending on how you normally 
print files on your system. <P>
<B>Default:</B> print command = lpr -r -P %p %s <P>
<B>Example:</B>print command = /usr/local/samba/bin/myprintscript %p %s <P>

<H3><A NAME="print ok">print ok (S)</A></H3>
A synonym for this parameter is 'printable'. <P>
If this parameter is 'Yes', then clients may open, write to 
and submit spool files on the directory specified for the service. <P>
Note that a printable service will ALWAYS allow writing to the service path 
(user privileges permitting) via the spooling of print data. The 
<A HREF="#read only">read only</A> parameter controls only non-printing 
access to the resource. <P>
<B>Default:</B> print ok = No <P>
<B>Example:</B> print ok = Yes <P>
 
<H3><A NAME="printcap name">printcap name (G)</A></H3>
This parameter may be used to override the compiled-in default printcap name 
used by the server (usually /etc/printcap).  On SystemV 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 compile time in Samba (this includes 
most SystemV 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. <P>
A minimal printcap file would look something like this: <P>
print1|My Printer 1 <BR>
print2|My Printer 2 <BR>
print3|My Printer 3 <BR>
print4|My Printer 4 <BR>
print5|My Printer 5 <P>
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. <P>
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. <P>
<B>Default:</B> printcap name = /etc/printcap <P>
<B>Example:</B> printcap name = /etc/myprintcap <P>
 
<H3><A NAME="printer driver">printer driver (S)</A></H3>
This option allows you to control the string that clients receive when they 
ask the server for the printer driver associated with a printer. If you are 
using Windows95 or WindowsNT then you can use this to automate the setup of 
printers on your system. <P>
You need to set this parameter to the exact string (case sensitive) that 
describes the appropriate printer driver for your system. If you don't know 
the exact string to use then you should first try with no "printer driver" 
option set and the client will give you a list of printer drivers. The 
appropriate strings are shown in a scrollbox after you have chosen the 
printer manufacturer. <P>
<B>Example:</B> printer driver = HP LaserJet 4L <P>
 
<H3><A NAME="printer name">printer name (S)</A></H3>
A synonym for this parameter is 'printer'. <P>
This parameter specifies the name of the printer to which print jobs spooled 
through a printable service will be sent. <P>
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. <P>
<B>Default:</B> none (but may be 'lp' on many systems) <P>
<B>Example:</B> printer name = laserwriter <P>
 
<H3><A NAME="printer driver file">printer driver file (G)</A></H3>
This parameter tells Samba where the printer driver definition file, used 
when serving drivers to Windows 95 clients, is to be found. If this is not 
set, the default is : <P>
SAMBA_INSTALL_DIRECTORY/lib/printers.def <P>
This file is created from Windows 95 'msprint.def' files found on the Windows 
95 client system. For more details on setting up serving of printer drivers 
to Windows 95 clients, see the documentation file docs/PRINTER_DRIVER.txt. <P>
<B>Default:</B> None (set in compile). <P>
<B>Example:</B> printer driver file = /usr/local/samba/printers/drivers.def <P>
Related parameters. 
<A HREF="#printer driver location">printer driver location</A> <P>
 
<H3><A NAME="printer driver location">printer driver location (S)</A></H3>
This parameter tells clients of a particular printer share where to find the 
printer driver files for the automatic installation of drivers for Windows 95 
machines. If Samba is set up to serve printer drivers to Windows 95 machines, 
this should be set to <P>
\\MACHINE\PRINTER$ <P>
Where MACHINE is the NetBIOS name of your Samba 
server, and PRINTER$ is a share you set up for serving printer driver 
files. For more details on setting this up see the documentation file 
docs/PRINTER_DRIVER.txt. <P>
<B>Default:</B> None <P>
<B>Example:</B> printer driver location = \\MACHINE\PRINTER$ <P>
Related paramerers. 
<A HREF="#printer driver file">printer driver file</A><P>
 
<H3><A NAME="printing">printing (S)</A></H3>
This parameters controls how printer status information is interpreted 
on your system, and also affects the default values for the 
<A HREF="#print command">print command</A>, 
<A HREF="#lpq command">lpq command</A> and 
<A HREF="#lprm command">lprm command</A>. <P>
Currently six printing styles are supported. They are bsd, sysv, hpux, aix, 
qnx and plp. <P>
To see what the defaults are for the other print commands when using these 
options use the "testparm" program. <P>
As of version 1.9.18 of Samba this option can be set on a per printer basis <P>
<B>Example:</B> printing = sysv <P>
 
<H3><A NAME="protocol">protocol (G)</A></H3>
The value of the parameter (a string) is the highest protocol level that will 
be supported by the server. <P>
Possible values are CORE, COREPLUS, LANMAN1, LANMAN2 and NT1. The relative 
merits of each are discussed in the README file. <P>
Normally this option should not be set as the automatic negotiation phase in 
the SMB protocol takes care of choosing the appropriate protocol. <P>
<B>Default:</B> protocol = NT1 <P>
<B>Example:</B> protocol = LANMAN1 <P>

<H3><A NAME="read bmpx">read bmpx (S)</A></H3>
<B>Default:</B> read bmpx = Yes <P>

<H3><A NAME="read list">read list (S)</A></H3>
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 <A HREF="#read only">read only</A> option is set 
to. The list can include group names using the @group syntax. <P>
See also the <A HREF="#write list">write list</A> option <P>
<B>Default:</B> read list = <P>
<B>Example:</B> read list = mary, @students <P>
 
<H3><A NAME="read only">read only (S)</A></H3>
Inverted synonyms for this parameter are 'writable' and 'write ok'. <P>
If this parameter is 'Yes', then users of the service may not create or 
modify files in the service's directory. <P>
Note that a printable service ('<A HREF="#printable">printable</A> = Yes') 
will ALWAYS allow writing to the directory (user privileges permitting), but 
only via spooling operations. <P>
<B>Default:</B> read only = Yes <P>
<B>Examples:</B> read only = No <BR>
writable = No <BR>
write ok = Yes <P>

<H3><A NAME="read prediction">read prediction (G)</A></H3>
This options enables or disables the read prediction code used to speed up 
reads from the server. When enabled the server will try to pre-read data 
from the last accessed file that was opened read-only while waiting for 
packets. <P>
<B>Default:</B> read prediction = No <P>
<B>Example:</B> read prediction = Yes <P>

<H3><A NAME="read raw">read raw (G)</A></H3>
This parameter controls whether or not the server will support raw reads when 
transferring data to clients. <P>
If enabled, raw reads allow reads of 65535 bytes in one packet. This typically 
provides a major performance benefit. <P>
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. <P>
In general this parameter should be viewed as a system tuning tool and left 
severely alone. See also <A HREF="#write raw">write raw.</A> <P>
<B>Default:</B> read raw = Yes <P>
<B>Example:</B> read raw = No <P>

<H3><A NAME="read size">read size (G)</A></H3>
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. <P>
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. <P>
The default value is 2048, 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. <P>
<B>Default:</B> read size = 2048 <P>
<B>Example:</B> read size = 8192 <P>
 
<H3><A NAME="remote announce">remote announce (G)</A></H3>
This option allows you to setup nmbd to periodically announce itself to 
arbitrary IP addresses with an arbitrary workgroup name. <P>
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. <P>
For example: <P>
remote announce = 192.168.2.255/SERVERS 192.168.4.255/STAFF <P>
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 <A HREF="#workgroup">workgroup</A> option is 
used instead. <P>
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. <P>
This option replaces similar functionality from the nmbd lmhosts file. <P>
 
<H3><A NAME="remote browse sync">remote browse sync (G)</A></H3>
This option allows you to setup nmbd to periodically request 
synchronisation 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. <P>
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.<P>
For example: <P>
remote browse sync = 192.168.2.255 192.168.4.255 <P>
the above line would cause nmbd to request the master browser on the 
specified subnets or addresses to synchronise their browse lists with the 
local server. <P>
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 it's 
segment. <P>
 
<H3><A NAME="revalidate">revalidate (S)</A></H3>
This options controls whether Samba will allow a previously validated 
username/password pair to be used to attach to a share. Thus if you connect 
to \\server\share1 then to \\server\share2 it won't automatically allow the 
client to request connection to the second share as the same username as the 
first without a password. <P>
If "revalidate" is Yes then the client will be denied automatic access as 
the same username. <P>
<B>Default:</B> revalidate = No <P>
<B>Example:</B> revalidate = Yes <P>
 
<H3><A NAME="root directory">root directory (G)</A></H3>
Synonyms for this parameter are 'root dir' and 'root'. <P>
The server will chroot() 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 <A HREF="#wide links">wide links</A> parameter). <P>
Adding a "root dir" 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 dir" 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 dir" 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. <P>
<B>Default:</B> root directory = / <P>
<B>Example:</B> root directory = /homes/smb <P>

<H3><A NAME="root postexec">root postexec (S)</A></H3>
This is the same as <A HREF="#postexec">postexec</A> except that 
the command is run as root. This is useful for unmounting filesystems (such 
as CDROMS) after a connection is closed. <P>
 
<H3><A NAME="root preexec">root preexec (S)</A></H3>
This is the same as <A HREF="#exec">exec</A> except that the command is run 
as root. This is useful for mounting filesystems (such as CDROMS) before a 
connection is finalised. <P>
 
<H3><A NAME="security">security (G)</A></H3>
This option affects how clients respond to Samba. <P>
The option sets the "security mode bit" in replies to protocol negotiations 
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.<P>
The default is "security=SHARE", mainly because that was the only option at 
one stage. <P>
The alternatives are "security = user" or "security = server". <P>
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".<P>
There is a bug in WfWg that may affect your decision. When in user 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. <P>
If you use "security = server" then 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". <P>
See the <A HREF="#password server">password server</A> option for more 
details. <P>
<B>Default:</B> security = SHARE <P>
<B>Example:</B> security = USER <P>

<H3><A NAME="server string">server string (G)</A></H3>
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. <P>
It also sets what will appear in browse lists next to the machine name. <P>
A %v will be replaced with the Samba version number. <P>
A %h will be replaced with the hostname. <P>
<B>Default:</B> server string = Samba %v <P>
<B>Example:</B> server string = University of GNUs Samba Server <P>
 
<H3><A NAME="set directory">set directory (S)</A></H3>
If 'set directory = No', then users of the service may not use the setdir 
command to change directory. <P>
The setdir command is only implemented in the Digital Pathworks 
client. See the Pathworks documentation for details. <P>
<B>Default:</B> set directory = No <P>
<B>Example:</B> set directory = Yes <P>
 
<H3><A NAME="shared mem size">shared mem size (G)</A></H3>
This parameter is only useful when Samba has been compiled with 
FAST_SHARE_MODES. It specifies the size of the shared 
memory (in bytes) to use between smbd processes. You should never change 
this parameter unless you have studied the source and know what you are 
doing. This parameter defaults to 1024 multiplied by the setting of the 
maximum number of open files in the file local.h in the Samba source code. 
MAX_OPEN_FILES is normally set to 100, so this parameter defaults to 102400 
bytes. <P>
<B>Default</B> shared mem size = 102400 <P>
 
<H3><A NAME="smb passwd file">smb passwd file (G)</A></H3>
This option sets the path to the encrypted smbpasswd file. This is a 
*VERY DANGEROUS OPTION* if the smb.conf is user writable. By default the 
path to the smbpasswd file is compiled into Samba. <P>
 
<H3><A NAME="smbrun">smbrun (G)</A></H3>
This sets the full path to the smbrun binary. This defaults to the value in 
the Makefile. <P>
You must get this path right for many services to work correctly. <P>
<B>Default:</B> taken from Makefile <P>
<B>Example:</B> smbrun = /usr/local/samba/bin/smbrun <P>
 
<H3><A NAME="share modes">share modes (S)</A></H3>
This enables or disables the honouring of the "share modes" during a file 
open. These modes are used by clients to gain exclusive read or write access 
to a file. <P>
These open modes are not directly supported by UNIX, so they are simulated 
using lock files in the <A HREF="#lock dir">lock dir</A>. The "lock dir" 
specified in smb.conf must be readable by all users. <P>
The share modes that are enabled by this option are DENY_DOS, DENY_ALL, 
DENY_READ, DENY_WRITE, DENY_NONE and DENY_FCB. <P>
Enabling this option gives full share compatibility but may cost a bit of 
processing time on the UNIX server. They are enabled by default. <P>
<B>Default:</B> share modes = Yes <P>
<B>Example:</B> share modes = No <P>
 
<H3><A NAME="short preserve case">short preserve case (S)</A></H3>
This controls if new short filenames are created with the case that the client 
passes, or if they are forced to be the "default" case. <P>
<B>Default:</B> short preserve case = No <P>
See the section on <A HREF="#NAME MANGLING">NAME MANGLING</A> for a fuller 
discussion. <P>
 
<H3><A NAME="socket address">socket address (G)</A></H3>
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. <P>
By default samba will accept connections on any address. <P>
<B>Example:</B> socket address = 192.168.2.20 <P>
 
<H3><A NAME="socket options">socket options (G)</A></H3>
This option (which can also be invoked with the -O command line option) allows 
you to set socket options to be used when talking with the client. <P>
Socket options are controls on the networking layer of the operating systems 
which allow the connection to be tuned. <P>
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. I strongly suggest you read the appropriate documentation for 
your operating system first (perhaps "man setsockopt" will help). <P>
You may find that on some systems Samba will say "Unknown socket option" when 
you supply an option. This means you either mis-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 me (samba-bugs@samba.anu.edu.au). <P>
Any of the supported socket options may be combined in any way you like, as 
long as your OS allows it. <P>
This is the list of socket options currently settable using this option: <P>
SO_KEEPALIVE <BR>
SO_REUSEADDR <BR>
SO_BROADCAST <BR>
TCP_NODELAY <BR>
IPTOS_LOWDELAY <BR>
IPTOS_THROUGHPUT <BR>
SO_SNDBUF * <BR>
SO_RCVBUF * <BR>
SO_SNDLOWAT * <BR>
SO_RCVLOWAT * <P>
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. <P>
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. <P>
If you are on a local network then a sensible option might be <P>
socket options = IPTOS_LOWDELAY <P>
If you have an almost unloaded local network and you don't mind a lot 
of extra CPU usage in the server then you could try <P>
socket options = IPTOS_LOWDELAY TCP_NODELAY <P>
If you are on a wide area network then perhaps try setting IPTOS_THROUGHPUT. <P>
Note that several of the options may cause your Samba server to fail 
completely. Use these options with caution! <P>
<B>Default:</B> no socket options <P>
<B>Example:</B> socket options = IPTOS_LOWDELAY <P>
 
<H3><A NAME="status">status (G)</A></H3>
This enables or disables logging of connections to a status 
file that <B>smbstatus</B> can read. <P>
With this disabled <B>smbstatus</B> won't be able to tell you what connections 
are active. <P>
<B>Default:</B> status = Yes <P>
<B>Example:</B> status = No <P>
 
<H3><A NAME="strict locking">strict locking (S)</A></H3>
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. <P>
When strict locking is "no" the server does file lock checks only when the 
client explicitly asks for them. <P>
Well behaved clients always ask for lock checks when it is important, 
so in the vast majority of cases "strict locking = no" is preferable. <P>
<B>Default:</B> strict locking = No <P>
<B>Example:</B> strict locking = Yes <P>
 
<H3><A NAME="strip dot">strip dot (G)</A></H3>
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. <P>
<B>Default:</B> strip dot = No <P>
<B>Example:</B> strip dot = Yes <P>
 
<H3><A NAME="syslog">syslog (G)</A></H3>
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 to 
LOG_NOTICE, debug level three maps onto LOG_INFO. The paramter sets the 
threshold for doing the mapping, all Samba debug messages above this threashold 
are mapped to syslog LOG_DEBUG messages. <P>
<B>Default:</B> syslog = 1 <P>
 
<H3><A NAME="syslog only">syslog only (G)</A></H3>
If this parameter is set then Samba debug messages are logged 
into the system syslog only, and not to the debug log files. <P>
<B>Default:</B> syslog only = no <P>
 
<H3><A NAME="sync always">sync always (S)</A></H3>
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. <P>
<B>Default:</B> sync always = No <P>
<B>Example:</B> sync always = Yes <P>
 
<H3><A NAME="time offset">time offset (G)</A></H3>
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. <P>
<B>Default:</B> time offset = 0 <P>
<B>Example:</B> time offset = 60 <P>
 
<H3><A NAME="time server">time server (G)</A></H3>
This parameter determines if nmbd advertises itself as a time server to 
Windows clients. <P>
<B>Default:</B> time server = No <P>
<B>Example:</B> time server = Yes <P>
 
<H3><A NAME="unix realname">unix realname (G)</A></H3>
This boolean parameter when set causes samba to supply the real name field 
from the unix password file to the client. This is useful for setting up mail 
clients and WWW browsers on systems used by more than one person. <P>
<B>Default:</B> unix realname = No <P>
<B>Example:</B> unix realname = Yes <P>
 
<H3><A NAME="update encrypted">update encrypted (S)</A></H3>
<B>Default:</B> update encrypted = No <P>

<H3><A NAME="use rhosts">use rhosts (S)</A></H3>
<B>Default:</B> use rhosts = No <P>

<H3><A NAME="username">username (S)</A></H3>
A synonym for this parameter is 'user'. <P>
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). <P>
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. <P>
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. <P>
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. <P>
To restrict a service to a particular set of users you can use the 
<A HREF="#valid users">valid users</A> line. <P>
If any of the usernames begin with a @ then the name will be looked 
up in the groups file and will expand to a list of all users in the group 
of that name. Note that searching though a groups file can take quite some 
time, and some clients may time out during the search. <P>
See the section below on 
<A HREF="#USERNAME/PASSWORD VALIDATION">USERNAME/PASSWORD VALIDATION</A>
for more information on how this parameter determines access to the services.<P>
<B>Default:</B> The guest account if a guest service, else the name of the service. <P>
<B>Examples:</B>username = fredusername = fred, mary, jack, jane, @users, @pcgroup <P>
 
<H3><A NAME="username level">username level (G)</A></H3>
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. <P>
If this parameter is set to non-zero the behaviour changes. This parameter 
is a number that specifies the number of uppercase combinations to try whilst 
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'. <P>
<B>Default:</B> username level = 0 <P>
<B>Example:</B> username level = 5 <P>
 
<H3><A NAME="username map">username map (G)</A></H3>
This option allows you to 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. <P>
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. <P>
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. <P>
If any line begins with a '#' or a ';' then it is ignored <P>
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. <P>
For example to map from the name "admin" or "administrator" to the UNIX name 
"root" you would use <P>
root = admin administrator <P>
Or to map anyone in the UNIX group "system" to the UNIX name "sys" you would 
use <P>
sys = @system <P>
You can have as many mappings as you like in a username map file. <P>
You can map Windows usernames that have spaces in them by using 
double quotes around the name. For example: <P>
tridge = "Andrew Tridgell" <P>
would map the windows username "Andrew Tridgell" to the unix username 
tridge. <P>
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. <P>
!sys = mary fred guest = * <P>
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 <A HREF="#password server">password server</A>
(if you have one). The password server will receive whatever username the 
client supplies without modification. <P>
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. <P>
<B>Default</B> no username map <P>
<B>Example</B> username map = /usr/local/samba/lib/users.map <P>
 
<H3><A NAME="valid chars">valid chars (S)</A></H3>
The option allows you to specify additional characters that should be 
considered valid by the server in filenames. This is particularly 
useful for national character sets, such as adding u-umlaut or a-ring. <P>
The option takes a list of characters in either integer or character form 
with spaces between them. If you give two characters with a colon between 
them then it will be taken as an lowercase:uppercase pair. <P>
If you have an editor capable of entering the characters into the config file 
then it is probably easiest to use this method. Otherwise you can specify the 
characters in octal, decimal or hexadecimal form using the usual C notation.<P>
For example to add the single character 'Z' to the charset (which is a 
pointless thing to do as it's already there) you could do one of the following 
<P>
valid chars = Z <BR>
valid chars = z:Z <BR>
valid chars = 0132:0172 <P>
The last two examples above actually add two characters, and alter the 
uppercase and lowercase mappings appropriately. <P>
Note that you MUST specify this parameter after the 
<A HREF="#client code page">client code page</A> parameter if you have both 
set. If "client code page" is set after the "valid chars" parameter the 
"valid chars" settings will be overwritten. <P>
See also the <A HREF="#client code page">client code page</A> parameter. <P>
<B>Default:</B> Samba defaults to using a reasonable set of valid characters 
for english systems <P>
<B>Example:</B>  valid chars = 0345:0305 0366:0326 0344:0304 <P>
The above example allows filenames to have the swedish characters in them. <P>
NOTE: It is actually quite difficult to correctly produce a "valid chars" line 
for a particular system. To automate the process tino@augsburg.net 
has written a package called "validchars" which will automatically produce 
a complete "valid chars" line for a given client system. Look in the examples 
subdirectory for this package. <P>
 
<H3><A NAME="valid users">valid users (S)</A></H3>
This is a list of users that should be allowed to login to this service. A 
name starting with @ is interpreted as a UNIX group. <P>
If this is empty (the default) then any user can login. If a username is in 
both this list and the <A HREF="#invalid users">invalid users</A> list then 
access is denied for that user. <P>
The current servicename is substituted for %S. This is useful in the [homes] 
section. <P>
See also <A HREF="#invalid users">invalid users</A> <P>
<B>Default</B> No valid users list. (anyone can login) <P>
<B>Example</B> valid users = greg, @pcusers <P>
 
<H3><A NAME="veto files">veto files (S)</A></H3>
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. <P>
Each entry must be a unix path, not a DOS path and must not include the 
unix directory separator "/". <P>
Note that the case sensitivity option is applicable in vetoing files. <P>
One feature of the veto files parameter that it is important to be aware of, 
is that if a directory contains nothing but files that match the veto files 
parameter (which means that Windows/DOS clients cannot ever see them) is 
deleted, the veto files within that directory *are automatically deleted* 
along with it, if the user has UNIX permissions to do so.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. <P>
See also <A HREF="#hide files">hide files</A> and 
<A HREF="#case sensitive">case sensitive</A> <P>
<B>Default</B> No files or directories are vetoed. <P>
<B>Examples</B> Example 1.  Veto any files containing the word Security, any 
ending in .tmp, and any directory containing the word root. <P>
veto files = /*Security*/*.tmp/*root*/ <P>
Example 2.  Veto the Apple specific files that a NetAtalk server creates. <P>
veto files = /.AppleDouble/.bin/.AppleDesktop/Network Trash Folder/ <P>
 
<H3><A NAME="veto oplock files">veto oplock files (S)</A></H3>
This parameter is only valid when the <A HREF="#oplocks">oplocks</A>
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 
<A HREF="#veto files">veto files</A> parameter. <P>
<B>Default</B> No files are vetoed for oplock grants. <P>
<B>Examples</B> 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 : <P>
veto oplock files = /*.SEM/ <P>
 
<H3><A NAME="volume">volume (S)</A></H3>
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.<P>
The default is the name of the share <P>
 
<H3><A NAME="wide links">wide links (S)</A></H3>
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. <P>
<B>Default:</B> wide links = Yes <P>
<B>Example:</B> wide links = No <P>
 
<H3><A NAME="wins proxy">wins proxy (G)</A></H3>
This is a boolean that controls if nmbd will respond to broadcast name queries 
on behalf of other hosts. You may need to set this to no for some older 
clients. <P>
<B>Default:</B> wins proxy = No <P>

<H3><A NAME="wins server">wins server (G)</A></H3>
This specifies the DNS name (or IP address) of the WINS server that Samba 
should register with. If you have a WINS server on your network then you 
should set this to the WINS servers name. <P>
You should point this at your WINS server if you have a multi-subnetted 
network. <P>
<B>Default:</B> wins server = <P>
 
<H3><A NAME="wins support">wins support (G)</A></H3>
This boolean controls if the nmbd 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. <P>
<B>Default:</B> wins support = No <P>

<H3><A NAME="workgroup">workgroup (G)</A></H3>
This controls what workgroup your server will appear to be in when queried by 
clients. <P>
<B>Default:</B> set in the Makefile <P>
<B>Example:</B> workgroup = MYGROUP <P>
 
<H3><A NAME="write list">write list (S)</A></H3>
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 <A HREF="#writable">writable</A> option is set to. 
The list can include group names using the @group syntax. <P>
Note that if a user is in both the read list and the write list then they 
will be given write access. <P>
See also the <A HREF="#read list">read list</A> option <P>
<B>Default:</B> write list = <P>
<B>Example:</B> write list = admin, root, @staff <P>
 
<H3><A NAME="write raw">write raw (G)</A></H3>
This parameter controls whether or not the server will support raw writes 
when transferring data from clients. <P>
<B>Default:</B> write raw = Yes <P>
<B>Example:</B> write raw = No <P>

<H3><A NAME="USERNAME/PASSWORD VALIDATION">USERNAME/PASSWORD VALIDATION</A></H3>
There are a number of ways in which a user can connect to a
service. The server follows the following steps in determining if it will
allow a connection to a specified service. If all the steps fail then the
connection request is rejected. If one of the steps pass then the following
steps are not checked. <P>
If the service is marked "<A HREF="#guest only">guest only</A> = yes" then
steps 1 to 5 are skipped <P>
Step 1: If the client has passed a username/password
pair and that username/password pair is validated by the UNIX system's
password programs then the connection is made as that username. Note that
this includes the \\server\service%username method of passing a username.  <P>
Step 2: If the client has previously registered a username with the system
and now supplies a correct password for that username then the connection
is allowed. <P>
Step 3: The client's netbios name and any previously used user
names are checked against the supplied password, if they match then the
connection is allowed as the corresponding user. <P>
Step 4: If the client has previously validated a username/password pair with 
the server and the client has passed the validation token then that username 
is used.  This step is skipped if "<A HREF="#revalidate">revalidate</A> = yes" 
for this service. <P>
Step 5: If a "<A HREF="#username">username</A> = " field is given in the 
smb.conf file for the service and the client has supplied a password, and 
that password matches (according to the UNIX system's password checking) with 
one of the usernames from the username= field then the connection is made as 
the username in the "username=" line. If one of the username in the username= 
list begins with a @ then that name expands to a list of names in the group 
of the same name. <P>
Step 6: If the service is a guest service then a connection is made as the 
username given in the "<A HREF="#guest account">guest account</A> =" for the 
service, irrespective of the supplied password.<P>
 
<H3><A NAME="NAME MANGLING">NAME MANGLING </A></H3>
Samba supports "name mangling" so that DOS and Windows clients can use files 
that don't conform to the 8.3 format. It can also be set to adjust the case of 
8.3 format filenames. <P>
There are several options that control the way mangling is 
performed, and they are grouped here rather than listed separately.  <P>
All of these options can be set separately for each service (or globally, 
of course). <P>
The options are: <P>
"<A HREF="#mangle case">mangle case</A> = yes/no" controls if names that have 
characters that aren't of the "default" case are mangled. For example, if 
this is yes then a name like "Mail" would be mangled. Default no. <P>
"<A HREF="#case sensitive">case sensitive</A> = yes/no" controls whether 
filenames are case sensitive. If they aren't then Samba must do a filename 
search and match on passed names. Default no. <P>
"<A HREF="#default case">default case</A> = upper/lower" controls what the 
default case is for new filenames. Default lower. <P>
"<A HREF="#preserve case">preserve case</A> = yes/no" controls if new 
files are created with the case that the client passes, or if they are 
forced to be the "default" case. Default no. <P>
"<A HREF="#short preserve case">short preserve case</A> = yes/no" 
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. Default no. <P>
 
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