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diff --git a/docs/docbook/projdoc/passdb.sgml b/docs/docbook/projdoc/passdb.sgml deleted file mode 100644 index 422cf7b7e7..0000000000 --- a/docs/docbook/projdoc/passdb.sgml +++ /dev/null @@ -1,972 +0,0 @@ -<chapter id="passdb"> -<chapterinfo> - &author.jelmer; - &author.jerry; - &author.jeremy; - &author.jht; - <author> - <firstname>Olivier (lem)</firstname><surname>Lemaire</surname> - <affiliation> - <orgname>IDEALX</orgname> - <address><email>olem@IDEALX.org</email></address> - </affiliation> - </author> - - <pubdate>February 2003</pubdate> -</chapterinfo> - -<title>User information database</title> - -<sect1> - <title>Introduction</title> - - <para>Old windows clients send plain text passwords over the wire. - Samba can check these passwords by crypting them and comparing them - to the hash stored in the unix user database. - </para> - - <para> - Newer windows clients send encrypted passwords (so-called - Lanman and NT hashes) over - the wire, instead of plain text passwords. The newest clients - will only send encrypted passwords and refuse to send plain text - passwords, unless their registry is tweaked. - </para> - - <para>These passwords can't be converted to unix style encrypted - passwords. Because of that you can't use the standard unix - user database, and you have to store the Lanman and NT hashes - somewhere else. </para> - - <para>Next to a differently encrypted passwords, - windows also stores certain data for each user - that is not stored in a unix user database, e.g. - workstations the user may logon from, the location where his/her - profile is stored, etc. - Samba retrieves and stores this information using a "passdb backend". - Commonly - available backends are LDAP, plain text file, MySQL and nisplus. - For more information, see the documentation about the - <command>passdb backend = </command> parameter. - </para> -</sect1> - -<sect1> - <title>Important Notes About Security</title> - - <para>The unix and SMB password encryption techniques seem similar - on the surface. This similarity is, however, only skin deep. The unix - scheme typically sends clear text passwords over the network when - logging in. This is bad. The SMB encryption scheme never sends the - cleartext password over the network but it does store the 16 byte - hashed values on disk. This is also bad. Why? Because the 16 byte hashed - values are a "password equivalent". You cannot derive the user's - password from them, but they could potentially be used in a modified - client to gain access to a server. This would require considerable - technical knowledge on behalf of the attacker but is perfectly possible. - You should thus treat the data stored in whatever - passdb backend you use (smbpasswd file, ldap, mysql) as though it contained the - cleartext passwords of all your users. Its contents must be kept - secret, and the file should be protected accordingly.</para> - - <para>Ideally we would like a password scheme which neither requires - plain text passwords on the net or on disk. Unfortunately this - is not available as Samba is stuck with being compatible with - other SMB systems (WinNT, WfWg, Win95 etc). </para> - - <warning> - <para>Note that Windows NT 4.0 Service pack 3 changed the - default for permissible authentication so that plaintext - passwords are <emphasis>never</emphasis> sent over the wire. - The solution to this is either to switch to encrypted passwords - with Samba or edit the Windows NT registry to re-enable plaintext - passwords. See the document WinNT.txt for details on how to do - this.</para> - - <para>Other Microsoft operating systems which also exhibit - this behavior includes</para> - - <para> These versions of MS Windows do not support full domain - security protocols, although they may log onto a domain environment. - Of these Only MS Windows XP Home does NOT support domain logons.</para> - - <simplelist> - <member>MS DOS Network client 3.0 with - the basic network redirector installed</member> - - <member>Windows 95 with the network redirector - update installed</member> - - <member>Windows 98 [se]</member> - - <member>Windows Me</member> - - <member>Windows XP Home</member> - </simplelist> - - <para> The following versions of MS Windows fully support domain - security protocols.</para> - - <simplelist> - <member>Windows NT 3.5x</member> - <member>Windows NT 4.0</member> - <member>Windows 2000 Professional</member> - <member>Windows 200x Server/Advanced Server</member> - <member>Windows XP Professional</member> - </simplelist> - </warning> - - <note><para>All current release of - Microsoft SMB/CIFS clients support authentication via the - SMB Challenge/Response mechanism described here. Enabling - clear text authentication does not disable the ability - of the client to participate in encrypted authentication.</para></note> - - <para>MS Windows clients will cache the encrypted password alone. - Even when plain text passwords are re-enabled, through the appropriate - registry change, the plain text password is NEVER cached. This means that - in the event that a network connections should become disconnected (broken) - only the cached (encrypted) password will be sent to the resource server - to affect a auto-reconnect. If the resource server does not support encrypted - passwords the auto-reconnect will fail. <emphasis>USE OF ENCRYPTED PASSWORDS - IS STRONGLY ADVISED.</emphasis></para> - - <sect2> - <title>Advantages of SMB Encryption</title> - - <simplelist> - <member>Plain text passwords are not passed across - the network. Someone using a network sniffer cannot just - record passwords going to the SMB server.</member> - - <member>WinNT doesn't like talking to a server - that does not support encrypted passwords. It will refuse - to browse the server if the server is also in user level - security mode. It will insist on prompting the user for the - password on each connection, which is very annoying. The - only things you can do to stop this is to use SMB encryption. - </member> - - <member>Encrypted password support allows automatic share - (resource) reconnects.</member> - </simplelist> - </sect2> - - - <sect2> - <title>Advantages of non-encrypted passwords</title> - - <simplelist> - <member>Plain text passwords are not kept - on disk, and are NOT cached in memory. </member> - - <member>Uses same password file as other unix - services such as login and ftp</member> - - <member>Use of other services (such as telnet and ftp) which - send plain text passwords over the net, so sending them for SMB - isn't such a big deal.</member> - </simplelist> - </sect2> -</sect1> - - -<sect1> - <title>The smbpasswd Command</title> - - <para>The smbpasswd utility is a utility similar to the - <command>passwd</command> or <command>yppasswd</command> programs. - It maintains the two 32 byte password fields in the passdb backend. </para> - - <para><command>smbpasswd</command> works in a client-server mode - where it contacts the local smbd to change the user's password on its - behalf. This has enormous benefits - as follows.</para> - - <para><command>smbpasswd</command> has the capability - to change passwords on Windows NT servers (this only works when - the request is sent to the NT Primary Domain Controller if you - are changing an NT Domain user's password).</para> - - <para>To run smbpasswd as a normal user just type :</para> - - <para><prompt>$ </prompt><userinput>smbpasswd</userinput></para> - <para><prompt>Old SMB password: </prompt><userinput><type old value here - - or hit return if there was no old password></userinput></para> - <para><prompt>New SMB Password: </prompt><userinput><type new value> - </userinput></para> - <para><prompt>Repeat New SMB Password: </prompt><userinput><re-type new value - </userinput></para> - - <para>If the old value does not match the current value stored for - that user, or the two new values do not match each other, then the - password will not be changed.</para> - - <para>If invoked by an ordinary user it will only allow the user - to change his or her own Samba password.</para> - - <para>If run by the root user smbpasswd may take an optional - argument, specifying the user name whose SMB password you wish to - change. Note that when run as root smbpasswd does not prompt for - or check the old password value, thus allowing root to set passwords - for users who have forgotten their passwords.</para> - - <para><command>smbpasswd</command> is designed to work in the same way - and be familiar to UNIX users who use the <command>passwd</command> or - <command>yppasswd</command> commands.</para> - - <para>For more details on using <command>smbpasswd</command> refer - to the man page which will always be the definitive reference.</para> -</sect1> - -<!-- -<sect1> -<title>The <command>pdbedit</command> command</title> -FIXME -</sect1> ---> - -<sect1> -<title>Plain text</title> -<para> -Older versions of samba retrieved user information from the unix user database -and eventually some other fields from the file <filename>/etc/samba/smbpasswd</filename> -or <filename>/etc/smbpasswd</filename>. When password encryption is disabled, no -data is stored at all. -</para> -</sect1> - -<sect1> -<title>TDB</title> -<para>Samba can also store the user data in a "TDB" (Trivial Database). Using this backend -doesn't require any additional configuration. This backend is recommended for new installations that -don not require LDAP. -</para> -</sect1> - -<sect1> -<title>LDAP</title> - -<sect2> -<title>Introduction</title> - -<para> -This document describes how to use an LDAP directory for storing Samba user -account information traditionally stored in the smbpasswd(5) file. It is -assumed that the reader already has a basic understanding of LDAP concepts -and has a working directory server already installed. For more information -on LDAP architectures and Directories, please refer to the following sites. -</para> - -<itemizedlist> - <listitem><para>OpenLDAP - <ulink url="http://www.openldap.org/">http://www.openldap.org/</ulink></para></listitem> - <listitem><para>iPlanet Directory Server - <ulink url="http://iplanet.netscape.com/directory">http://iplanet.netscape.com/directory</ulink></para></listitem> -</itemizedlist> - -<para> -Note that <ulink url="http://www.ora.com/">O'Reilly Publishing</ulink> is working on -a guide to LDAP for System Administrators which has a planned release date of -early summer, 2002. -</para> - -<para> -Two additional Samba resources which may prove to be helpful are -</para> - -<itemizedlist> - <listitem><para>The <ulink url="http://www.unav.es/cti/ldap-smb/ldap-smb-3-howto.html">Samba-PDC-LDAP-HOWTO</ulink> - maintained by Ignacio Coupeau.</para></listitem> - - <listitem><para>The NT migration scripts from <ulink url="http://samba.idealx.org/">IDEALX</ulink> that are - geared to manage users and group in such a Samba-LDAP Domain Controller configuration. - </para></listitem> -</itemizedlist> - -</sect2> - -<sect2> -<title>Encrypted Password Database</title> - -<para> -Traditionally, when configuring <ulink url="smb.conf.5.html#ENCRYPTPASSWORDS">"encrypt -passwords = yes"</ulink> in Samba's <filename>smb.conf</filename> file, user account -information such as username, LM/NT password hashes, password change times, and account -flags have been stored in the <filename>smbpasswd(5)</filename> file. There are several -disadvantages to this approach for sites with very large numbers of users (counted -in the thousands). -</para> - -<itemizedlist> -<listitem><para> -The first is that all lookups must be performed sequentially. Given that -there are approximately two lookups per domain logon (one for a normal -session connection such as when mapping a network drive or printer), this -is a performance bottleneck for large sites. What is needed is an indexed approach -such as is used in databases. -</para></listitem> - -<listitem><para> -The second problem is that administrators who desired to replicate a -smbpasswd file to more than one Samba server were left to use external -tools such as <command>rsync(1)</command> and <command>ssh(1)</command> -and wrote custom, in-house scripts. -</para></listitem> - -<listitem><para> -And finally, the amount of information which is stored in an -smbpasswd entry leaves no room for additional attributes such as -a home directory, password expiration time, or even a Relative -Identified (RID). -</para></listitem> -</itemizedlist> - -<para> -As a result of these defeciencies, a more robust means of storing user attributes -used by smbd was developed. The API which defines access to user accounts -is commonly referred to as the samdb interface (previously this was called the passdb -API, and is still so named in the CVS trees). -</para> - -<para> -There are a few points to stress about that the ldapsam -does not provide. The LDAP support referred to in the this documentation does not -include: -</para> - -<itemizedlist> - <listitem><para>A means of retrieving user account information from - an Windows 2000 Active Directory server.</para></listitem> - <listitem><para>A means of replacing /etc/passwd.</para></listitem> -</itemizedlist> - -<para> -The second item can be accomplished by using LDAP NSS and PAM modules. LGPL -versions of these libraries can be obtained from PADL Software -(<ulink url="http://www.padl.com/">http://www.padl.com/</ulink>). More -information about the configuration of these packages may be found at "LDAP, -System Administration; Gerald Carter, O'Reilly; Chapter 6: Replacing NIS". -</para> - -</sect2> - -<sect2> -<title>Supported LDAP Servers</title> - -<!-- FIXME: This is outdated for 3.0 --> - -<para> -The LDAP samdb code in 2.2.3 (and later) has been developed and tested -using the OpenLDAP 2.0 server and client libraries. -The same code should be able to work with Netscape's Directory Server -and client SDK. However, due to lack of testing so far, there are bound -to be compile errors and bugs. These should not be hard to fix. -If you are so inclined, please be sure to forward all patches to -<ulink url="mailto:samba-patches@samba.org">samba-patches@samba.org</ulink> and -<ulink url="mailto:jerry@samba.org">jerry@samba.org</ulink>. -</para> - -</sect2> - -<sect2> -<title>Schema and Relationship to the RFC 2307 posixAccount</title> - - -<para> -Samba 3.0 includes the necessary schema file for OpenLDAP 2.0 in -<filename>examples/LDAP/samba.schema</filename>. The sambaAccount objectclass is given here: -</para> - -<para><programlisting> -objectclass ( 1.3.1.5.1.4.1.7165.2.2.2 NAME 'sambaAccount' SUP top AUXILIARY - DESC 'Samba Account' - MUST ( uid $ rid ) - MAY ( cn $ lmPassword $ ntPassword $ pwdLastSet $ logonTime $ - logoffTime $ kickoffTime $ pwdCanChange $ pwdMustChange $ acctFlags $ - displayName $ smbHome $ homeDrive $ scriptPath $ profilePath $ - description $ userWorkstations $ primaryGroupID $ domain )) -</programlisting></para> - -<para> -The samba.schema file has been formatted for OpenLDAP 2.0. The OID's are -owned by the Samba Team and as such is legal to be openly published. -If you translate the schema to be used with Netscape DS, please -submit the modified schema file as a patch to <ulink -url="mailto:jerry@samba.org">jerry@samba.org</ulink> -</para> - -<para> -Just as the smbpasswd file is meant to store information which supplements a -user's <filename>/etc/passwd</filename> entry, so is the sambaAccount object -meant to supplement the UNIX user account information. A sambaAccount is a -<constant>STRUCTURAL</constant> objectclass so it can be stored individually -in the directory. However, there are several fields (e.g. uid) which overlap -with the posixAccount objectclass outlined in RFC2307. This is by design. -</para> - -<!--olem: we should perhaps have a note about shadowAccounts too as many -systems use them, isn'it ? --> - -<para> -In order to store all user account information (UNIX and Samba) in the directory, -it is necessary to use the sambaAccount and posixAccount objectclasses in -combination. However, smbd will still obtain the user's UNIX account -information via the standard C library calls (e.g. getpwnam(), et. al.). -This means that the Samba server must also have the LDAP NSS library installed -and functioning correctly. This division of information makes it possible to -store all Samba account information in LDAP, but still maintain UNIX account -information in NIS while the network is transitioning to a full LDAP infrastructure. -</para> -</sect2> - -<sect2> -<title>Configuring Samba with LDAP</title> - - -<sect3> -<title>OpenLDAP configuration</title> - -<para> -To include support for the sambaAccount object in an OpenLDAP directory -server, first copy the samba.schema file to slapd's configuration directory. -</para> - -<para> -<prompt>root# </prompt><userinput>cp samba.schema /etc/openldap/schema/</userinput> -</para> - -<para> -Next, include the <filename>samba.schema</filename> file in <filename>slapd.conf</filename>. -The sambaAccount object contains two attributes which depend upon other schema -files. The 'uid' attribute is defined in <filename>cosine.schema</filename> and -the 'displayName' attribute is defined in the <filename>inetorgperson.schema</filename> -file. Both of these must be included before the <filename>samba.schema</filename> file. -</para> - -<para><programlisting> -## /etc/openldap/slapd.conf - -## schema files (core.schema is required by default) -include /etc/openldap/schema/core.schema - -## needed for sambaAccount -include /etc/openldap/schema/cosine.schema -include /etc/openldap/schema/inetorgperson.schema -include /etc/openldap/schema/samba.schema -include /etc/openldap/schema/nis.schema - -.... -</programlisting></para> - -<para> -It is recommended that you maintain some indices on some of the most usefull attributes, -like in the following example, to speed up searches made on sambaAccount objectclasses -(and possibly posixAccount and posixGroup as well). -</para> -<para><programlisting> -# Indices to maintain -## required by OpenLDAP 2.0 -index objectclass eq - -## support pb_getsampwnam() -index uid pres,eq -## support pdb_getsambapwrid() -index rid eq - -## uncomment these if you are storing posixAccount and -## posixGroup entries in the directory as well -##index uidNumber eq -##index gidNumber eq -##index cn eq -##index memberUid eq - -# (both fetched via ldapsearch): -index primaryGroupID eq -index displayName pres,eq - -</programlisting></para> -</sect3> - - -<sect3> -<title>Configuring Samba</title> - -<para> -The following parameters are available in smb.conf only with <parameter>--with-ldapsam</parameter> -was included when compiling Samba. -</para> - -<itemizedlist> - <listitem><para><ulink url="smb.conf.5.html#PASSDBBACKEND">passdb backend [ldapsam|ldapsam_nua]:url</ulink></para></listitem> - <listitem><para><ulink url="smb.conf.5.html#LDAPSSL">ldap ssl</ulink></para></listitem> - <listitem><para><ulink url="smb.conf.5.html#LDAPADMINDN">ldap admin dn</ulink></para></listitem> - <listitem><para><ulink url="smb.conf.5.html#LDAPSUFFIX">ldap suffix</ulink></para></listitem> - <listitem><para><ulink url="smb.conf.5.html#LDAPFILTER">ldap filter</ulink></para></listitem> - <listitem><para><ulink url="smb.conf.5.html#LDAPPORT">ldap port</ulink></para></listitem> - <listitem><para><ulink url="smb.conf.5.html#LDAPMACHINSUFFIX">ldap machine suffix</ulink></para></listitem> - <listitem><para><ulink url="smb.conf.5.html#LDAPUSERSUFFIX">ldap user suffix</ulink></para></listitem> - <listitem><para><ulink url="smb.conf.5.html#LDAPDELETEDN">ldap delete dn</ulink></para></listitem> - -</itemizedlist> - -<para> -These are described in the <ulink url="smb.conf.5.html">smb.conf(5)</ulink> man -page and so will not be repeated here. However, a sample smb.conf file for -use with an LDAP directory could appear as -</para> - -<para><programlisting> -## /usr/local/samba/lib/smb.conf -[global] - security = user - encrypt passwords = yes - - netbios name = TASHTEGO - workgroup = NARNIA - - # ldap related parameters - - # define the DN to use when binding to the directory servers - # The password for this DN is not stored in smb.conf. Rather it - # must be set by using 'smbpasswd -w <replaceable>secretpw</replaceable>' to store the - # passphrase in the secrets.tdb file. If the "ldap admin dn" values - # change, this password will need to be reset. - ldap admin dn = "cn=Samba Manager,ou=people,dc=samba,dc=org" - - # Define the SSL option when connecting to the directory - # ('off', 'start tls', or 'on' (default)) - ldap ssl = start tls - - passdb backend ldapsam:ldap://ahab.samba.org - - # smbpasswd -x delete the entire dn-entry - ldap delete dn = no - - # the machine and user suffix added to the base suffix - # wrote WITHOUT quotes. NULL siffixes by default - ldap user suffix = ou=People - ldap machine suffix = ou=Systems - - # define the port to use in the LDAP session (defaults to 636 when - # "ldap ssl = on") - ldap port = 389 - - # specify the base DN to use when searching the directory - ldap suffix = "ou=people,dc=samba,dc=org" - - # generally the default ldap search filter is ok - # ldap filter = "(&(uid=%u)(objectclass=sambaAccount))" -</programlisting></para> - - -</sect3> -</sect2> - - -<sect2> -<title>Accounts and Groups management</title> - -<para> -As users accounts are managed thru the sambaAccount objectclass, you should -modify your existing administration tools to deal with sambaAccount attributes. -</para> - -<para> -Machines accounts are managed with the sambaAccount objectclass, just -like users accounts. However, it's up to you to store thoses accounts -in a different tree of you LDAP namespace: you should use -"ou=Groups,dc=plainjoe,dc=org" to store groups and -"ou=People,dc=plainjoe,dc=org" to store users. Just configure your -NSS and PAM accordingly (usually, in the /etc/ldap.conf configuration -file). -</para> - -<para> -In Samba release 3.0, the group management system is based on posix -groups. This means that Samba makes usage of the posixGroup objectclass. -For now, there is no NT-like group system management (global and local -groups). -</para> - -</sect2> - -<sect2> -<title>Security and sambaAccount</title> - - -<para> -There are two important points to remember when discussing the security -of sambaAccount entries in the directory. -</para> - -<itemizedlist> - <listitem><para><emphasis>Never</emphasis> retrieve the lmPassword or - ntPassword attribute values over an unencrypted LDAP session.</para></listitem> - <listitem><para><emphasis>Never</emphasis> allow non-admin users to - view the lmPassword or ntPassword attribute values.</para></listitem> -</itemizedlist> - -<para> -These password hashes are clear text equivalents and can be used to impersonate -the user without deriving the original clear text strings. For more information -on the details of LM/NT password hashes, refer to the <link -linkend="passdb">User Database</link> of the Samba-HOWTO-Collection. -</para> - -<para> -To remedy the first security issue, the "ldap ssl" smb.conf parameter defaults -to require an encrypted session (<command>ldap ssl = on</command>) using -the default port of 636 -when contacting the directory server. When using an OpenLDAP 2.0 server, it -is possible to use the use the StartTLS LDAP extended operation in the place of -LDAPS. In either case, you are strongly discouraged to disable this security -(<command>ldap ssl = off</command>). -</para> - -<para> -Note that the LDAPS protocol is deprecated in favor of the LDAPv3 StartTLS -extended operation. However, the OpenLDAP library still provides support for -the older method of securing communication between clients and servers. -</para> - -<para> -The second security precaution is to prevent non-administrative users from -harvesting password hashes from the directory. This can be done using the -following ACL in <filename>slapd.conf</filename>: -</para> - -<para><programlisting> -## allow the "ldap admin dn" access, but deny everyone else -access to attrs=lmPassword,ntPassword - by dn="cn=Samba Admin,ou=people,dc=plainjoe,dc=org" write - by * none -</programlisting></para> - - -</sect2> - - - -<sect2> -<title>LDAP specials attributes for sambaAccounts</title> - -<para> -The sambaAccount objectclass is composed of the following attributes: -</para> - -<itemizedlist> - - <listitem><para><constant>lmPassword</constant>: the LANMAN password 16-byte hash stored as a character - representation of a hexidecimal string.</para></listitem> - - <listitem><para><constant>ntPassword</constant>: the NT password hash 16-byte stored as a character - representation of a hexidecimal string.</para></listitem> - - <listitem><para><constant>pwdLastSet</constant>: The integer time in seconds since 1970 when the - <constant>lmPassword</constant> and <constant>ntPassword</constant> attributes were last set. - </para></listitem> - - <listitem><para><constant>acctFlags</constant>: string of 11 characters surrounded by square brackets [] - representing account flags such as U (user), W(workstation), X(no password expiration), and - D(disabled).</para></listitem> - - <listitem><para><constant>logonTime</constant>: Integer value currently unused</para></listitem> - - <listitem><para><constant>logoffTime</constant>: Integer value currently unused</para></listitem> - - <listitem><para><constant>kickoffTime</constant>: Integer value currently unused</para></listitem> - - <listitem><para><constant>pwdCanChange</constant>: Integer value currently unused</para></listitem> - - <listitem><para><constant>pwdMustChange</constant>: Integer value currently unused</para></listitem> - - <listitem><para><constant>homeDrive</constant>: specifies the drive letter to which to map the - UNC path specified by homeDirectory. The drive letter must be specified in the form "X:" - where X is the letter of the drive to map. Refer to the "logon drive" parameter in the - smb.conf(5) man page for more information.</para></listitem> - - <listitem><para><constant>scriptPath</constant>: The scriptPath property specifies the path of - the user's logon script, .CMD, .EXE, or .BAT file. The string can be null. The path - is relative to the netlogon share. Refer to the "logon script" parameter in the - smb.conf(5) man page for more information.</para></listitem> - - <listitem><para><constant>profilePath</constant>: specifies a path to the user's profile. - This value can be a null string, a local absolute path, or a UNC path. Refer to the - "logon path" parameter in the smb.conf(5) man page for more information.</para></listitem> - - <listitem><para><constant>smbHome</constant>: The homeDirectory property specifies the path of - the home directory for the user. The string can be null. If homeDrive is set and specifies - a drive letter, homeDirectory should be a UNC path. The path must be a network - UNC path of the form \\server\share\directory. This value can be a null string. - Refer to the "logon home" parameter in the smb.conf(5) man page for more information. - </para></listitem> - - <listitem><para><constant>userWorkstation</constant>: character string value currently unused. - </para></listitem> - - <listitem><para><constant>rid</constant>: the integer representation of the user's relative identifier - (RID).</para></listitem> - - <listitem><para><constant>primaryGroupID</constant>: the relative identifier (RID) of the primary group - of the user.</para></listitem> - -</itemizedlist> - -<para> -The majority of these parameters are only used when Samba is acting as a PDC of -a domain (refer to the <ulink url="Samba-PDC-HOWTO.html">Samba-PDC-HOWTO</ulink> for details on -how to configure Samba as a Primary Domain Controller). The following four attributes -are only stored with the sambaAccount entry if the values are non-default values: -</para> - -<itemizedlist> - <listitem><para>smbHome</para></listitem> - <listitem><para>scriptPath</para></listitem> - <listitem><para>logonPath</para></listitem> - <listitem><para>homeDrive</para></listitem> -</itemizedlist> - -<para> -These attributes are only stored with the sambaAccount entry if -the values are non-default values. For example, assume TASHTEGO has now been -configured as a PDC and that <command>logon home = \\%L\%u</command> was defined in -its <filename>smb.conf</filename> file. When a user named "becky" logons to the domain, -the <parameter>logon home</parameter> string is expanded to \\TASHTEGO\becky. -If the smbHome attribute exists in the entry "uid=becky,ou=people,dc=samba,dc=org", -this value is used. However, if this attribute does not exist, then the value -of the <parameter>logon home</parameter> parameter is used in its place. Samba -will only write the attribute value to the directory entry if the value is -something other than the default (e.g. \\MOBY\becky). -</para> - - -</sect2> - - - -<sect2> -<title>Example LDIF Entries for a sambaAccount</title> - - -<para> -The following is a working LDIF with the inclusion of the posixAccount objectclass: -</para> - -<para><programlisting> -dn: uid=guest2, ou=people,dc=plainjoe,dc=org -ntPassword: 878D8014606CDA29677A44EFA1353FC7 -pwdMustChange: 2147483647 -primaryGroupID: 1201 -lmPassword: 552902031BEDE9EFAAD3B435B51404EE -pwdLastSet: 1010179124 -logonTime: 0 -objectClass: sambaAccount -uid: guest2 -kickoffTime: 2147483647 -acctFlags: [UX ] -logoffTime: 2147483647 -rid: 19006 -pwdCanChange: 0 -</programlisting></para> - -<para> -The following is an LDIF entry for using both the sambaAccount and -posixAccount objectclasses: -</para> - -<para><programlisting> -dn: uid=gcarter, ou=people,dc=plainjoe,dc=org -logonTime: 0 -displayName: Gerald Carter -lmPassword: 552902031BEDE9EFAAD3B435B51404EE -primaryGroupID: 1201 -objectClass: posixAccount -objectClass: sambaAccount -acctFlags: [UX ] -userPassword: {crypt}BpM2ej8Rkzogo -uid: gcarter -uidNumber: 9000 -cn: Gerald Carter -loginShell: /bin/bash -logoffTime: 2147483647 -gidNumber: 100 -kickoffTime: 2147483647 -pwdLastSet: 1010179230 -rid: 19000 -homeDirectory: /home/tashtego/gcarter -pwdCanChange: 0 -pwdMustChange: 2147483647 -ntPassword: 878D8014606CDA29677A44EFA1353FC7 -</programlisting></para> - -</sect2> -</sect1> - -<sect1> -<title>MySQL</title> - -<sect2> -<title>Creating the database</title> - -<para> -You either can set up your own table and specify the field names to pdb_mysql (see below -for the column names) or use the default table. The file <filename>examples/pdb/mysql/mysql.dump</filename> -contains the correct queries to create the required tables. Use the command : - -<command>mysql -u<replaceable>username</replaceable> -h<replaceable>hostname</replaceable> -p<replaceable>password</replaceable> <replaceable>databasename</replaceable> < <filename>/path/to/samba/examples/pdb/mysql/mysql.dump</filename></command> - -</para> -</sect2> - -<sect2> -<title>Configuring</title> - -<para>This plugin lacks some good documentation, but here is some short info:</para> - -<para>Add a the following to the <command>passdb backend</command> variable in your <filename>smb.conf</filename>: -<programlisting> -passdb backend = [other-plugins] mysql:identifier [other-plugins] -</programlisting> -</para> - -<para>The identifier can be any string you like, as long as it doesn't collide with -the identifiers of other plugins or other instances of pdb_mysql. If you -specify multiple pdb_mysql.so entries in 'passdb backend', you also need to -use different identifiers! -</para> - -<para> -Additional options can be given thru the smb.conf file in the [global] section. -</para> - -<para><programlisting> -identifier:mysql host - host name, defaults to 'localhost' -identifier:mysql password -identifier:mysql user - defaults to 'samba' -identifier:mysql database - defaults to 'samba' -identifier:mysql port - defaults to 3306 -identifier:table - Name of the table containing users -</programlisting></para> - -<warning> -<para> -Since the password for the mysql user is stored in the -smb.conf file, you should make the the smb.conf file -readable only to the user that runs samba. This is considered a security -bug and will be fixed soon. -</para> -</warning> - -<para>Names of the columns in this table(I've added column types those columns should have first):</para> - -<para><programlisting> -identifier:logon time column - int(9) -identifier:logoff time column - int(9) -identifier:kickoff time column - int(9) -identifier:pass last set time column - int(9) -identifier:pass can change time column - int(9) -identifier:pass must change time column - int(9) -identifier:username column - varchar(255) - unix username -identifier:domain column - varchar(255) - NT domain user is part of -identifier:nt username column - varchar(255) - NT username -identifier:fullname column - varchar(255) - Full name of user -identifier:home dir column - varchar(255) - Unix homedir path -identifier:dir drive column - varchar(2) - Directory drive path (eg: 'H:') -identifier:logon script column - varchar(255) - - Batch file to run on client side when logging on -identifier:profile path column - varchar(255) - Path of profile -identifier:acct desc column - varchar(255) - Some ASCII NT user data -identifier:workstations column - varchar(255) - - Workstations user can logon to (or NULL for all) -identifier:unknown string column - varchar(255) - unknown string -identifier:munged dial column - varchar(255) - ? -identifier:uid column - int(9) - Unix user ID (uid) -identifier:gid column - int(9) - Unix user group (gid) -identifier:user sid column - varchar(255) - NT user SID -identifier:group sid column - varchar(255) - NT group ID -identifier:lanman pass column - varchar(255) - encrypted lanman password -identifier:nt pass column - varchar(255) - encrypted nt passwd -identifier:plain pass column - varchar(255) - plaintext password -identifier:acct control column - int(9) - nt user data -identifier:unknown 3 column - int(9) - unknown -identifier:logon divs column - int(9) - ? -identifier:hours len column - int(9) - ? -identifier:unknown 5 column - int(9) - unknown -identifier:unknown 6 column - int(9) - unknown -</programlisting></para> - -<para> -Eventually, you can put a colon (:) after the name of each column, which -should specify the column to update when updating the table. You can also -specify nothing behind the colon - then the data from the field will not be -updated. -</para> - -</sect2> - -<sect2> -<title>Using plaintext passwords or encrypted password</title> - -<para> -I strongly discourage the use of plaintext passwords, however, you can use them: -</para> - -<para> -If you would like to use plaintext passwords, set -'identifier:lanman pass column' and 'identifier:nt pass column' to -'NULL' (without the quotes) and 'identifier:plain pass column' to the -name of the column containing the plaintext passwords. -</para> - -<para> -If you use encrypted passwords, set the 'identifier:plain pass -column' to 'NULL' (without the quotes). This is the default. -</para> - -</sect2> - -<sect2> -<title>Getting non-column data from the table</title> - -<para> -It is possible to have not all data in the database and making some 'constant'. -</para> - -<para> -For example, you can set 'identifier:fullname column' to : -<command>CONCAT(First_name,' ',Sur_name)</command> -</para> - -<para> -Or, set 'identifier:workstations column' to : -<command>NULL</command></para> - -<para>See the MySQL documentation for more language constructs.</para> - -</sect2> -</sect1> - -<sect1> -<title>XML</title> - -<para>This module requires libxml2 to be installed.</para> - -<para>The usage of pdb_xml is pretty straightforward. To export data, use: -</para> - -<para> - <userinput>pdbedit -e xml:filename</userinput> -</para> - -<para> -(where filename is the name of the file to put the data in) -</para> - -<para> -To import data, use: -<userinput>pdbedit -i xml:filename -e current-pdb</userinput> -</para> -<para> -Where filename is the name to read the data from and current-pdb to put it in. -</para> -</sect1> - -</chapter> |