I have a lab environment set up using two Debian Wheezy servers (Squeeze doesn't have a new enough kernel or iptables to do TPROXY properly). One of the servers is a router and the other is a proxy server. There are several clients connected to the router to simulate a production routing environment. If I have both the TPROXY redirection and Squid on the same server, Squid handles the requests and everything works perfectly. However, this isn't how I want the proxy to be configured in our production environment. I've changed my iptables rules on the router to redirect all tagged 1 packets to the proxy server. This is working perfectly fine and I can see the data being routed to the proxy server using tcpdump on both the router and the proxy. However, Squid on the proxy server doesn't seem to 'see' the data being routed and doesn't do anything with it. I have "http_port 3129 tproxy" set on the proxy server. Is there anything special I need to do using iptables on the proxy server? Both servers are running kernel 3.2.0-2-amd64 and iptables 1.4.13 from Wheezy and the Squid being used on the proxy is 3.1.19. If any more information is needed, please just let me know and I'd be happy to supply it. Thanks. --Thomas York
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