Is there som kind of filter for netfilter that can block access to anonymous proxies? The problem I often face is that the most advanced users always can work around the firewall by using proxies. I know that I could run a proxy myself but this is not exactly what I want. The best would be if there could be a filter similar to ipp2p which would check for a "proxy signature" and block those communications. Best regards Stian B. Barmen
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