Blocking websites without a proxy?
We currently use AB Tutor to block websites but this takes ages to roll out the banned websites to computers.
The obvious answer would be to stick in a proxy but our network spans over five sites so each site would need its own proxy which would work out expensive. One proxy would work but the site containing the proxy would be bombarded with data.
Is there a piece of server based software that rolls out banned websites when the computer starts so internet data can still go from computer to the WWW without going cross site first?