content filtering server/hardware - any suggestions?

Hello folks, this is a little off topic, but I need a good solution for:

Web page content filtering, with password or parental override function (that works with Canopy).

I plan on changing to a home-built Mikrotik router to handle my Canopy gateway.

Any suggestions? Cost is a factor…


Per user or network wide?

Per user. Some on, some not, all going through a Mikrotik or two.

VLANs and Dansguardian: