Net filtering is only part of the overall security picture for your computer. It's designed specifically for browsers and other internet programs, while other security software protects against viruses, spam, spyware and other threats.

If you have a security suite it may include a net filter. Most of the products in our security suite test included content filtering and instant messaging protection.

If your security suite already does net filtering but you prefer to use one of the programs we tested, check to see if the security suite will let you turn off the net filtering module. If you can't disable the net filtering provided with your security suite, don't install an additional net filtering program.

Running multiple net filter programs on the same PC can cause software conflicts possibly leading to slowdowns, system instability or crashes and lack of protection.

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