PAM_WINBIND.CONF(5) 5 PAM_WINBIND.CONF(5)NAMEpam_winbind.conf - Configuration file of PAM module for Winbind
DESCRIPTION
This configuration file is part of the samba(7) suite.
pam_winbind.conf is the configuration file for the pam_winbind PAM
module. See pam_winbind(8) for further details.
SYNOPSIS
The pam_winbind.conf configuration file is a classic ini-style
configuration file. There is only one section (global) where various
options are defined.
OPTIONS
pam_winbind supports several options which can either be set in the PAM
configuration files or in the pam_winbind configuration file situated
at /etc/security/pam_winbind.conf. Options from the PAM configuration
file take precedence to those from the pam_winbind.conf configuration
file.
debug = yes|no
Gives debugging output to syslog. Defaults to "no".
debug_state = yes|no
Gives detailed PAM state debugging output to syslog. Defaults to
"no".
require_membership_of = [SID or NAME]
If this option is set, pam_winbind will only succeed if the user is
a member of the given SID or NAME. A SID 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 SID. That name must have the form:
MYDOMAIN\\mygroup or MYDOMAIN\\myuser. pam_winbind will, in that
case, lookup the SID internally. Note that NAME may not contain any
spaces. It is thus recommended to only use SIDs. You can verify the
list of SIDs a user is a member of with wbinfo --user-sids=SID.
This setting is empty by default.
try_first_pass = yes|no
By default, pam_winbind tries to get the authentication token from
a previous module. If no token is available it asks the user for
the old password. With this option, pam_winbind aborts with an
error if no authentication token from a previous module is
available. If a primary password is not valid, PAM will prompt for
a password. Default to "no".
krb5_auth = yes|no
pam_winbind can authenticate using Kerberos when winbindd is
talking to an Active Directory domain controller. Kerberos
authentication must be enabled with this parameter. When Kerberos
authentication can not succeed (e.g. due to clock skew), winbindd
will fallback to samlogon authentication over MSRPC. When this
parameter is used in conjunction with winbind refresh tickets,
winbind will keep your Ticket Granting Ticket (TGT) uptodate by
refreshing it whenever necessary. Defaults to "no".
krb5_ccache_type = [type]
When pam_winbind is configured to try kerberos authentication by
enabling the krb5_auth option, it can store the retrieved Ticket
Granting Ticket (TGT) in a credential cache. The type of credential
cache can be controlled with this option. The supported values are:
KEYRING (when supported by the system's Kerberos library and
Kernel), FILE and DIR (when the DIR type is supported by the
system's Kerberos library). In case of FILE a credential cache in
the form of /tmp/krb5cc_UID will be created - in case of DIR you
NEED to specify a directory. UID is replaced with the numeric user
id.
When using the KEYRING type, the supported mechanism is
“KEYRING:persistent:UID”, which uses the Linux kernel keyring to
store credentials on a per-UID basis. This is the recommended
choice on latest Linux distributions, as it is the most secure and
predictable method.
It is also possible to define custom filepaths and use the "%u"
pattern in order to substitue the numeric user id. Examples:
krb5_ccache_type = DIR:/run/user/%u/krb5cc
This will create a credential cache file in the specified
directory.
krb5_ccache_type = FILE:/tmp/krb5cc_%u
This will create a credential cache file.
Leave empty to just do kerberos authentication without having a
ticket cache after the logon has succeeded. This setting is empty
by default.
cached_login = yes|no
Winbind allows to logon using cached credentials when winbind
offline logon is enabled. To use this feature from the PAM module
this option must be set. Defaults to "no".
silent = yes|no
Do not emit any messages. Defaults to "no".
mkhomedir = yes|no
Create homedirectory for a user on-the-fly, option is valid in PAM
session block. Defaults to "no".
warn_pwd_expire = days
Defines number of days before pam_winbind starts to warn about
passwords that are going to expire. Defaults to 14 days.
SEE ALSOpam_winbind(8), wbinfo(1), winbindd(8), smb.conf(5)VERSION
This man page is correct for version 3 of Samba.
AUTHOR
The original Samba software and related utilities were created by
Andrew Tridgell. Samba is now developed by the Samba Team as an Open
Source project similar to the way the Linux kernel is developed.
This manpage was written by Jelmer Vernooij and Guenther Deschner.
Samba 4.0 08/18/2014 PAM_WINBIND.CONF(5)
