logoutd 8 System Management Commands logoutd enforce login time restrictions logoutd logoutd enforces the login time and port restrictions specified in /etc/porttime. logoutd should be started from /etc/rc. The /var/run/utmp file is scanned periodically and each user name is checked to see if the named user is permitted on the named port at the current time. Any login session which is violating the restrictions in /etc/porttime is terminated. /etc/porttime File containing port access. /var/run/utmp List of current login sessions.