One solution pops into my mind: Squid together with Dansguardian.
I dunno if it can do all the things you desire but its worth the look.

more information:

- http://www.squid-cache.org
- http://dansguardian.org

Google has a lot of information as well.
Good luck !



Brenno.

On 8/8/05, Devdas Bhagat wrote:
> Does anyone have suggestions/recommendations for a HTTP proxy (cheap/free=

)
> which can filter based on content. Preferably something capable of
> Bayesian analysis of content? It needs to work in ISP environments, so
> transparent proxy support would be ideal.
>=20
> Traffic to be filtered is outbound from the browser to the server.
>=20
> Thanks
> Devdas Bhagat
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> firewall-wizards mailing list
> firewall-wizards@honor.icsalabs.com
> http://honor.icsalabs.com/mailman/li...rewall-wizards
>

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