Under Linux operating system you can use the faillog command to display faillog records or to set login failure limits. faillog command displays the contents of the failure log from /var/log/faillog database file. It also can be used for maintains failure counters and limits. If you run faillog command without arguments, it will display only list of user faillog records who have ever had a login failure.
There are two ways to allow / restrict system login to specific user groups only. The simplest method is to use a PAM module called pam_listfile.so. Another option is to use login access control table. Locking down system login access is very important task if you need a secure system. The system administrator is free […]
The idea is very simple you want to limit who can use sshd based on a list of users. The text file contains a list of users that may not log in (or allowed to log in) using the SSH server. This is used for improving security. PAM (Pluggable authentication modules) allows you to define […]