Content Filtering

I have a client that has users surfing porn on lunch hours etc
Looking for a good content filtering system

Suggestions

Comments

Dan's Guardian

I've heard good things about Dan's Guardian.

how about?

How about using a firewall ID and password and tracking all of their URLs...then fire 'em?

Cheers,
Dave Brown

Transparent proxy

With a transparent proxy, you wouldn't even need login information. You could just track which websites are visited by IP address. Squid can be setup as a transparent proxy.