I just want some advice for the implementation of a web filter for a school network. Just want to block some contents and url. A free tool should be fine I guess. Any recommendations? Thanks!
closed as not a real question by Iszi, Scott Pack, Rory Alsop♦ Apr 30 '12 at 18:06
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.
Squid/Squidguard is kind of the de facto standard for this kind of thing. It's free and runs on Linux. This can work if your intent is to filter all traffic on the border of your network instead of installing a filter on each machine.