ku (killuser) v1.1pre2 – ku (killuser) is a utility for maintaining shell logins, based on anything from idle time, tty, user name, user group, user GID, if they are telnetted in, and more. (what a cool program name, eh?) 39k.
You can download it from the following link: https://packetstormsecurity.com/files/download/13261/ku-1.1pre2.tar.gz
Source: https://packetstormsecurity.com/files/13261/ku-1.1pre2.tar.gz.html