pam_localuser.so [
debug
] [
file=/path/passwd
]
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.
- PAM_SUCCESS
The new localuser was set successfully.
- PAM_SERVICE_ERR
No username was given.
- PAM_USER_UNKNOWN
User not known.
Add the following line to /etc/pam.d/su to
allow only local users in group wheel to use su.
account sufficient pam_localuser.so
account required pam_wheel.so