1 <?xml version="1.0" encoding="iso-8859-1"?>
2 <!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
3 <refentry id="pam_winbind.conf.5">
6 <refentrytitle>pam_winbind.conf</refentrytitle>
7 <manvolnum>5</manvolnum>
8 <refmiscinfo class="source">Samba</refmiscinfo>
9 <refmiscinfo class="manual">5</refmiscinfo>
10 <refmiscinfo class="version">4.2</refmiscinfo>
15 <refname>pam_winbind.conf</refname>
16 <refpurpose>Configuration file of PAM module for Winbind</refpurpose>
20 <title>DESCRIPTION</title>
22 <para>This configuration file is part of the <citerefentry><refentrytitle>samba</refentrytitle>
23 <manvolnum>7</manvolnum></citerefentry> suite.</para>
26 pam_winbind.conf is the configuration file for the pam_winbind PAM
28 <citerefentry><refentrytitle>pam_winbind</refentrytitle><manvolnum>8</manvolnum></citerefentry>
34 <title>SYNOPSIS</title>
37 The pam_winbind.conf configuration file is a classic ini-style
38 configuration file. There is only one section (global) where
39 various options are defined.
44 <title>OPTIONS</title>
47 pam_winbind supports several options which can either be set in
48 the PAM configuration files or in the pam_winbind configuration
50 <filename>/etc/security/pam_winbind.conf</filename>. Options
51 from the PAM configuration file take precedence to those from
52 the pam_winbind.conf configuration file.
57 <term>debug = yes|no</term>
58 <listitem><para>Gives debugging output to syslog. Defaults to "no".</para></listitem>
62 <term>debug_state = yes|no</term>
63 <listitem><para>Gives detailed PAM state debugging output to syslog. Defaults to "no".</para></listitem>
67 <term>require_membership_of = [SID or NAME]</term>
69 If this option is set, pam_winbind will only succeed if the user is a member of the given SID or NAME. A SID
70 can be either a group-SID, an alias-SID or even an user-SID. It is also possible to give a NAME instead of the
71 SID. That name must have the form: <parameter>MYDOMAIN\\mygroup</parameter> or
72 <parameter>MYDOMAIN\\myuser</parameter>. pam_winbind will, in that case, lookup the SID internally. Note that
73 NAME may not contain any spaces. It is thus recommended to only use SIDs. You can verify the list of SIDs a
74 user is a member of with <command>wbinfo --user-sids=SID</command>. This setting is empty by default.
76 <para>This option only operates during password authentication, and will not restrict access if a password is not required for any reason (such as SSH key-based login).</para>
81 <term>try_first_pass = yes|no</term>
83 By default, pam_winbind tries to get the authentication token from a previous module. If no token is available
84 it asks the user for the old password. With this option, pam_winbind aborts with an error if no authentication
85 token from a previous module is available. If a primary password is not valid, PAM will prompt for a password.
91 <term>krb5_auth = yes|no</term>
94 pam_winbind can authenticate using Kerberos when winbindd is
95 talking to an Active Directory domain controller. Kerberos
96 authentication must be enabled with this parameter. When
97 Kerberos authentication can not succeed (e.g. due to clock
98 skew), winbindd will fallback to samlogon authentication over
99 MSRPC. When this parameter is used in conjunction with
100 <parameter>winbind refresh tickets</parameter>, winbind will
101 keep your Ticket Granting Ticket (TGT) uptodate by refreshing
102 it whenever necessary. Defaults to "no".
108 <term>krb5_ccache_type = [type]</term>
111 When pam_winbind is configured to try kerberos authentication
112 by enabling the <parameter>krb5_auth</parameter> option, it can
113 store the retrieved Ticket Granting Ticket (TGT) in a
114 credential cache. The type of credential cache can be
115 controlled with this option. The supported values are:
116 <parameter>KEYRING</parameter> (when supported by the system's
117 Kerberos library and Kernel), <parameter>FILE</parameter> and
118 <parameter>DIR</parameter> (when the DIR type is supported by
119 the system's Kerberos library). In case of FILE a credential
120 cache in the form of /tmp/krb5cc_UID will be created - in case
121 of DIR you NEED to specify a directory. UID is replaced with
122 the numeric user id.</para>
124 <para>When using the KEYRING type, the supported mechanism is
125 <quote>KEYRING:persistent:UID</quote>, which uses the Linux
126 kernel keyring to store credentials on a per-UID basis. This is
127 the recommended choice on latest Linux distributions, as it is
128 the most secure and predictable method.</para>
130 <para>It is also possible to define custom filepaths and use the "%u"
131 pattern in order to substitue the numeric user id.
136 <term>krb5_ccache_type = DIR:/run/user/%u/krb5cc</term>
137 <listitem><para>This will create a credential cache file in the specified directory.</para></listitem>
140 <term>krb5_ccache_type = FILE:/tmp/krb5cc_%u</term>
141 <listitem><para>This will create a credential cache file.</para></listitem>
145 <para> Leave empty to just do kerberos authentication without
146 having a ticket cache after the logon has succeeded.
147 This setting is empty by default.
153 <term>cached_login = yes|no</term>
155 Winbind allows to logon using cached credentials when <parameter>winbind offline logon</parameter> is enabled. To use this feature from the PAM module this option must be set. Defaults to "no".
160 <term>silent = yes|no</term>
162 Do not emit any messages. Defaults to "no".
167 <term>mkhomedir = yes|no</term>
169 Create homedirectory for a user on-the-fly, option is valid in
170 PAM session block. Defaults to "no".
175 <term>warn_pwd_expire = days</term>
177 Defines number of days before pam_winbind starts to warn about passwords that are
178 going to expire. Defaults to 14 days.
189 <title>SEE ALSO</title>
191 <refentrytitle>pam_winbind</refentrytitle>
192 <manvolnum>8</manvolnum></citerefentry>, <citerefentry>
193 <refentrytitle>wbinfo</refentrytitle>
194 <manvolnum>1</manvolnum></citerefentry>, <citerefentry>
195 <refentrytitle>winbindd</refentrytitle>
196 <manvolnum>8</manvolnum></citerefentry>, <citerefentry>
197 <refentrytitle>smb.conf</refentrytitle>
198 <manvolnum>5</manvolnum></citerefentry></para>
202 <title>VERSION</title>
204 <para>This man page is correct for version 3 of Samba.</para>
208 <title>AUTHOR</title>
211 The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by
212 the Samba Team as an Open Source project similar to the way the Linux kernel is developed.
215 <para>This manpage was written by Jelmer Vernooij and Guenther Deschner.</para>