1PAM_WINBIND(8) 8 PAM_WINBIND(8)
2
6 pam_winbind - PAM module for Winbind
7
9 This tool is part of the samba(7) suite.
10 pam_winbind is a PAM module that can authenticate users against the
12 local domain by talking to the Winbind daemon.
13
15 Edit the PAM system config /etc/pam.d/service and modify it as the
16 following example shows:
17 ...
19 auth required pam_env.so
20 auth sufficient pam_unix2.so
21 +++ auth required pam_winbind.so use_first_pass
22 account requisite pam_unix2.so
23 +++ account required pam_winbind.so use_first_pass
24 +++ password sufficient pam_winbind.so
25 password requisite pam_pwcheck.so cracklib
26 password required pam_unix2.so use_authtok
27 session required pam_unix2.so
28 +++ session required pam_winbind.so
29 ...
30 Make sure that pam_winbind is one of the first modules in the session
33 part. It may retrieve kerberos tickets which are needed by other
34 modules.
35
37 pam_winbind supports several options which can either be set in the PAM
38 configuration files or in the pam_winbind configuration file situated
39 at /etc/security/pam_winbind.conf. Options from the PAM configuration
40 file take precedence to those from the configuration file. See
41 pam_winbind.conf(5) for further details.
42 debug
44 Gives debugging output to syslog.
45 debug_state
47 Gives detailed PAM state debugging output to syslog.
48 require_membership_of=[SID or NAME]
50 If this option is set, pam_winbind will only succeed if the user is
51 a member of the given SID or NAME. A SID can be either a group-SID,
52 an alias-SID or even an user-SID. It is also possible to give a
53 NAME instead of the SID. That name must have the form:
54 MYDOMAIN\\mygroup or MYDOMAIN\\myuser. pam_winbind will, in that
55 case, lookup the SID internally. Note that NAME may not contain any
56 spaces. It is thus recommended to only use SIDs. You can verify the
57 list of SIDs a user is a member of with wbinfo --user-sids=SID.
58 This option must only be specified on a auth module declaration, as
60 it only operates in conjunction with password authentication.
61 use_first_pass
63 By default, pam_winbind tries to get the authentication token from
64 a previous module. If no token is available it asks the user for
65 the old password. With this option, pam_winbind aborts with an
66 error if no authentication token from a previous module is
67 available.
68 try_first_pass
70 Same as the use_first_pass option (previous item), except that if
71 the primary password is not valid, PAM will prompt for a password.
72 use_authtok
74 Set the new password to the one provided by the previously stacked
75 password module. If this option is not set pam_winbind will ask the
76 user for the new password.
77 krb5_auth
79 pam_winbind can authenticate using Kerberos when winbindd is
80 talking to an Active Directory domain controller. Kerberos
81 authentication must be enabled with this parameter. When Kerberos
82 authentication can not succeed (e.g. due to clock skew), winbindd
83 will fallback to samlogon authentication over MSRPC. When this
84 parameter is used in conjunction with winbind refresh tickets,
85 winbind will keep your Ticket Granting Ticket (TGT) uptodate by
86 refreshing it whenever necessary.
87 krb5_ccache_type=[type]
89 When pam_winbind is configured to try kerberos authentication by
90 enabling the krb5_auth option, it can store the retrieved Ticket
91 Granting Ticket (TGT) in a credential cache. The type of credential
92 cache can be set with this option. Currently the only supported
93 value is: FILE. In that case a credential cache in the form of
94 /tmp/krb5cc_UID will be created, where UID is replaced with the
95 numeric user id. Leave empty to just do kerberos authentication
96 without having a ticket cache after the logon has succeeded.
97 cached_login
99 Winbind allows one to logon using cached credentials when winbind
100 offline logon is enabled. To use this feature from the PAM module
101 this option must be set.
102 silent
104 Do not emit any messages.
105 mkhomedir
107 Create homedirectory for a user on-the-fly, option is valid in PAM
108 session block.
109 warn_pwd_expire
111 Defines number of days before pam_winbind starts to warn about
112 passwords that are going to expire. Defaults to 14 days.
113
115 This section describes the data exported in the PAM stack which could
116 be used in other PAM modules.
117 PAM_WINBIND_HOMEDIR
119 This is the Windows Home Directory set in the profile tab in the
120 user settings on the Active Directory Server. This could be a local
121 path or a directory on a share mapped to a drive.
122 PAM_WINBIND_LOGONSCRIPT
124 The path to the logon script which should be executed if a user
125 logs in. This is normally a relative path to the script stored on
126 the server.
127 PAM_WINBIND_LOGONSERVER
129 This exports the Active Directory server we are authenticating
130 against. This can be used as a variable later.
131 PAM_WINBIND_PROFILEPATH
133 This is the profile path set in the profile tab in the user
134 settings. Normally the home directory is synced with this directory
135 on a share.
136
138 pam_winbind.conf(5), wbinfo(1), winbindd(8), smb.conf(5)
139
141 This man page is part of version 4.9.8 of Samba.
142
144 The original Samba software and related utilities were created by
145 Andrew Tridgell. Samba is now developed by the Samba Team as an Open
146 Source project similar to the way the Linux kernel is developed.
147 This manpage was written by Jelmer Vernooij and Guenther Deschner.
149Samba 4.9.8 05/14/2019 PAM_WINBIND(8)