Re: Content Filtering

[Sean <rseans@gmail.com>]

Have you tried SafeSquid - content filtering proxy?

http://howtoforge.com/content-filtering-proxy-safesquid
http://howtoforge.com/set-up-internet-access-control-and-internet-filtering-with-safesquid
http://howtoforge.com/control-access-to-unwanted-websites-using-url-blacklist-with-safesquid-proxy-server
http://howtoforge.com/gateway-level-virus-security-clamav-safesquid-proxy

Although it is not open source, they have a full featured free edition
that supports up to 20 users.