LineControlTime is a server which allows you to
control which users can connect to the Internet
through your server. It is based on Stefan Fuchs's
LineControl, and it features a 'Time Control'
feature which uses a MySQL database to store the
amount of time left for each user. The
authentication mechanism is based on PAM. Users
can also be authorized or refused according to the
current time. It works with ISDN or analog lines.