Windows NT 4.0 Server and Windows 2000/2003 Server do not offer thorough security options allowing administrators to efficiently manage logon and logoff activity within domains. UserLock solves this by tracking, notifying, and reporting all logon/logoff activity on your domains; and by limiting the number of simultaneous connections under a same user name for an entire Windows NT/2000/2003 network.
UserLock runs as a service and is based on agents that are automatically deployed without needing any end-user intervention.