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Editorial Team
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Asked: 2026-05-16T17:40:17+00:00

When maintaining networks, it is often an expedient thing to do to run a

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When maintaining networks, it is often an expedient thing to do to run a transparent proxy. By transparent proxy I mean a proxy that ‘hijacks’ outgoing connections and runs them through a local service. Specifically I run a linux firewall with squid configured so that all tcp/ip connections fowarded on port 80 are proxied by squid.

This is achived using the iptables ‘nat’ table, using IPv4.

But iptables for IPv6 does not have a ‘nat’ table, so I cannot use the same implementation. What is a technique I can use to transparently proxy traffic for IPv6 connections?

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  1. Editorial Team

    A viable way to do this is with the TPROXY rule in iptables, documentation is available here:

    This should be supported Squid (>= version 3.2). Using --enable-linux-netfilter and the iptables -t mangle -j TPROXY rule.

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