IS Decisions UserLock 3.02 Windows NT 4.0, 2000 and Windows 2003 do not offer strong security options allowing admini-strators to manage logon and logoff in domains.
UserLock solves this features lack by tracking, notifying and securing the logon/logoff activity of your domains. UserLock runs as a Windows NT service and is based on agents that are automatically deployed without needing any end-user intervention.
The software is also compatible with Windows 9x or Windows Me operating systems without securing them.
http://www.isdecisions.com/index.cfm...ucts-userlock#
Threaded Mode