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pam_winbind — PAM module for Winbind
This tool is part of the samba(7) suite.
pam_winbind is a PAM module that can authenticate users against the local domain by talking to the Winbind daemon.
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 configuration file.
Gives debugging output to syslog.
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, a alias-SID or even a 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.
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.
Set the new password to the one provided by the previously stacked password module. If this option is not set pam_winbind will ask the user for the new password.
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.
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 set with
this option. Currently the only supported value is:
FILE. In that case a credential cache in
the form of /tmp/krb5cc_UID will be created, where UID is
replaced with the numeric user id. Leave empty to just do
kerberos authentication without having a ticket cache after the
logon has succeeded.
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.
Do not emit any messages.