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PAM_LOCALUSER(8)               Linux-PAM Manual               PAM_LOCALUSER(8)
NAME
       pam_localuser - require users to be listed in /etc/passwd
SYNOPSIS
       pam_localuser.so [debug] [file=/path/passwd]
DESCRIPTION
       pam_localuser is a PAM module to help implementing site-wide login
       policies, where they typically include a subset of the network's users
       and a few accounts that are local to a particular workstation. Using
       pam_localuser and pam_wheel or pam_listfile is an effective way to
       restrict access to either local users and/or a subset of the network's
       users.
       This could also be implemented using pam_listfile.so and a very short
       awk script invoked by cron, but it's common enough to have been
       separated out.
OPTIONS
       debug
           Print debug information.
       file=/path/passwd
           Use a file other than /etc/passwd.
MODULE TYPES PROVIDED
       All module types (account, auth, password and session) are provided.
RETURN VALUES
       PAM_SUCCESS
           The new localuser was set successfully.
       PAM_SERVICE_ERR
           No username was given.
       PAM_PERM_DENIED
           The user is not listed in the passwd file.
EXAMPLES
       Add the following lines to /etc/pam.d/su to allow only local users or
       group wheel to use su.
           account sufficient pam_localuser.so
           account required pam_wheel.so
FILES
       /etc/passwd
           Local user account information.
SEE ALSO
       pam.conf(5), pam.d(5), pam(8)
AUTHOR
       pam_localuser was written by Nalin Dahyabhai <nalin AT redhat.com>.
Linux-PAM Manual                  05/18/2017                  PAM_LOCALUSER(8)