NAME
pam_winbind.conf - Configuration file of PAM module for WinbindDESCRIPTION
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|noGives 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 (where '\' character corresponds to the value of
winbind separator parameter). It is also possible to use a UPN in the
form user@REALM or group@REALM. 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.
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).
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) up-to-date 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:
KCM or KEYRING (when supported by the system's Kerberos library
and operating system), 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. The UID
directory is being created. The path up to the directory should already exist.
Check the details of the Kerberos implmentation.
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. The KEYRING has its limitations. As it
is secure kernel memory, for example bulk sorage of credentils is for not
possible.
When using th KCM type, the supported mechanism is “KCM:UID”,
which uses a Kerberos credential manaager to store credentials on a per-UID
basis similar to KEYRING. This is the recommended choice on latest Linux
distributions, offering a Kerberos Credential Manager. If not we suggest to
use KEYRING as those are the most secure and predictable method.
It is also possible to define custom filepaths and use the "%u"
pattern in order to substitute the numeric user id. Examples:
krb5_ccache_type = DIR:/run/user/%u/krb5cc
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
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.
Winbind allows one 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.
pwd_change_prompt = yes|no
Generate prompt for changing an expired
password. Defaults to "no".
SEE ALSO
pam_winbind(8), wbinfo(1), winbindd(8), smb.conf(5)VERSION
This man page is part of version 4.17.12-Debian 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.10/10/2023 | Samba 4.17.12-Debian |