1PAM_WINBIND.CONF(5)                    5                   PAM_WINBIND.CONF(5)
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NAME

6       pam_winbind.conf - Configuration file of PAM module for Winbind
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DESCRIPTION

9       This configuration file is part of the samba(7) suite.
10
11       pam_winbind.conf is the configuration file for the pam_winbind PAM
12       module. See pam_winbind(8) for further details.
13

SYNOPSIS

15       The pam_winbind.conf configuration file is a classic ini-style
16       configuration file. There is only one section (global) where various
17       options are defined.
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OPTIONS

20       pam_winbind supports several options which can either be set in the PAM
21       configuration files or in the pam_winbind configuration file situated
22       at /etc/security/pam_winbind.conf. Options from the PAM configuration
23       file take precedence to those from the pam_winbind.conf configuration
24       file.
25
26       debug = yes|no
27           Gives debugging output to syslog. Defaults to "no".
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29       debug_state = yes|no
30           Gives detailed PAM state debugging output to syslog. Defaults to
31           "no".
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33       require_membership_of = [SID or NAME]
34           If this option is set, pam_winbind will only succeed if the user is
35           a member of the given SID or NAME. A SID can be either a group-SID,
36           an alias-SID or even an user-SID. It is also possible to give a
37           NAME instead of the SID. That name must have the form:
38           MYDOMAIN\\mygroup or MYDOMAIN\\myuser. pam_winbind will, in that
39           case, lookup the SID internally. Note that NAME may not contain any
40           spaces. It is thus recommended to only use SIDs. You can verify the
41           list of SIDs a user is a member of with wbinfo --user-sids=SID.
42           This setting is empty by default.
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44           This option only operates during password authentication, and will
45           not restrict access if a password is not required for any reason
46           (such as SSH key-based login).
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48       try_first_pass = yes|no
49           By default, pam_winbind tries to get the authentication token from
50           a previous module. If no token is available it asks the user for
51           the old password. With this option, pam_winbind aborts with an
52           error if no authentication token from a previous module is
53           available. If a primary password is not valid, PAM will prompt for
54           a password. Default to "no".
55
56       krb5_auth = yes|no
57           pam_winbind can authenticate using Kerberos when winbindd is
58           talking to an Active Directory domain controller. Kerberos
59           authentication must be enabled with this parameter. When Kerberos
60           authentication can not succeed (e.g. due to clock skew), winbindd
61           will fallback to samlogon authentication over MSRPC. When this
62           parameter is used in conjunction with winbind refresh tickets,
63           winbind will keep your Ticket Granting Ticket (TGT) uptodate by
64           refreshing it whenever necessary. Defaults to "no".
65
66       krb5_ccache_type = [type]
67           When pam_winbind is configured to try kerberos authentication by
68           enabling the krb5_auth option, it can store the retrieved Ticket
69           Granting Ticket (TGT) in a credential cache. The type of credential
70           cache can be controlled with this option. The supported values are:
71           KEYRING (when supported by the system's Kerberos library and
72           Kernel), FILE and DIR (when the DIR type is supported by the
73           system's Kerberos library). In case of FILE a credential cache in
74           the form of /tmp/krb5cc_UID will be created - in case of DIR you
75           NEED to specify a directory. UID is replaced with the numeric user
76           id.
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78           When using the KEYRING type, the supported mechanism is
79           “KEYRING:persistent:UID”, which uses the Linux kernel keyring to
80           store credentials on a per-UID basis. This is the recommended
81           choice on latest Linux distributions, as it is the most secure and
82           predictable method.
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84           It is also possible to define custom filepaths and use the "%u"
85           pattern in order to substitue the numeric user id. Examples:
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87           krb5_ccache_type = DIR:/run/user/%u/krb5cc
88               This will create a credential cache file in the specified
89               directory.
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91           krb5_ccache_type = FILE:/tmp/krb5cc_%u
92               This will create a credential cache file.
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94           Leave empty to just do kerberos authentication without having a
95           ticket cache after the logon has succeeded. This setting is empty
96           by default.
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98       cached_login = yes|no
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. Defaults to "no".
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103       silent = yes|no
104           Do not emit any messages. Defaults to "no".
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106       mkhomedir = yes|no
107           Create homedirectory for a user on-the-fly, option is valid in PAM
108           session block. Defaults to "no".
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110       warn_pwd_expire = days
111           Defines number of days before pam_winbind starts to warn about
112           passwords that are going to expire. Defaults to 14 days.
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SEE ALSO

115       pam_winbind(8), wbinfo(1), winbindd(8), smb.conf(5)
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VERSION

118       This man page is part of version 4.8.3 of Samba.
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AUTHOR

121       The original Samba software and related utilities were created by
122       Andrew Tridgell. Samba is now developed by the Samba Team as an Open
123       Source project similar to the way the Linux kernel is developed.
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125       This manpage was written by Jelmer Vernooij and Guenther Deschner.
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129Samba 4.8.3                       10/30/2018               PAM_WINBIND.CONF(5)
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