filtering software on NT server 4.0

[Patty Curthoys]

I am wondering if anyone has seen or specifically has experience with
server based filtering software.  I have seen some information on web
sense which is a server based program that allows you to choose which
workstations on the network use the filtering software and it also
allows you to control the database to some extent.  Has anyone heard of
anything else along this line?  Especially something that will work with
MS proxy server.

Thanks 
Patty Curthoys
Technology Coordinator 
Chautauqua-Cattaraugus Library System