Use this daemon to monitor logon usage and timeout the user. For example:
# Format: TIMES:TTYS:USERS:GROUPS:MAXIDLE:MAXSESS:MAXDAY:WARN
Al:*:joseph:*:*:30:*:5
30 minutes of session usage with 5 minutes of warning
This is started, you can monitor if it exists by
ps -A | grep -i timeoutd
The configuration file is:
/etc/timeouts