Looking for Free Web Filter for network

As with everywhere, we are tight on cash and spending.  I'm looking for a free web filter I can attach to our network.  Our current one is 10 years old and barely blocks anything.  I'm using:

router
hub connected to PC (the hub sees the internet traffic)
switches to rest of network

Ideally I want to keep the hub and not get into port mirroring/etc.  Any suggestions?
rbeattie27Asked:
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cheshaCommented:
It sounds like a perfect opportunity for a squid proxy server running on Linux.  The software will cost you nothing and all you need is an old box (or virtual machine) running Linux with Squid installed to run as a proxy server.  You will then have complete control over any traffic passing through this proxy.
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b0lsc0ttIT ManagerCommented:
rbeattie27,

You might look at using OpenDNS as your DNS server.  They offer a way for you to then add filtering for content, etc.  No cost or extra hardware, etc.  The site is www.opendns.com .

Let me know if you have any questions or need more information.

b0lsc0tt
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JohnjcesCommented:
For a contetn filter and more, check out ClarkConnct, the community edition. It is free and works very well. You will need an old PC with NICs and your off and running!

It is easy to set up and provides a lot of features.

http://www.clarkconnect.com

John
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