Hey, The dnat rule should be done on the squid itsef. You will need to re-route the relevant traffic over the ipsec tunnel to the squid ip. It's possible to do that over ipip or gre tunnels.
Eliezer בתאריך יום ג׳, 30 ביולי 2024, 15:41, מאת Bolinhas André < andre.bolin...@articatech.com>: > I have a external proxy server connected by VPN (IPSEC) to my main branch, > and i'm trying to redirect all users HTTP / HTTPS traffic to this proxy. > Scenario Users -> Gateway (Main Branch) -> IPSEC -> Squid Proxy > (transparent mode) > > In my Gateway (Main Branch) I have this test iptables rule, that is > forwarding all the TPC / UDP traffic to the Proxy server. > > iptables -t nat -I PREROUTING -s 192.168.60.90 -p tcp -j DNAT > --to-destination 172.31.0.1 > iptables -t nat -I PREROUTING -s 192.168.60.90 -p udp -j DNAT > --to-destination 172.31.0.1 > > In Squidd Proxy server I have the followed rules > > iptables -t nat -I PREROUTING -s 192.168.60.90/32 -p tcp -m tcp --dport 443 > -m comment --comment ArticaSquidTransparent -j REDIRECT --to-ports 8081 > iptables -t nat -I PREROUTING -s 192.168.60.90/32 -p tcp -m tcp --dport 80 -m > comment --comment ArticaSquidTransparent -j REDIRECT --to-ports 8080 > > Everything is working correctly, HTTP traffic is ok, DNS are also working, > the only exeption is the HTTPS traffic, I can see the HTTPS traffic inside > the squid access.log but on client side I got a timeout > > 1722265740.867 1 192.168.60.90 TCP_TUNNEL/200 0 CONNECT cnn.com:443 - > HIER_DIRECT/51.210.183.2:443 - mac="00:00:00:00:00:00" > webfilterpolicy:%200%0D%0A exterr="-|-" > > Anyone can help me to understant if I'm missing so iptable rule to handle > the HTTPS traffic? > > Sent from Nine <http://www.9folders.com/> > _______________________________________________ > squid-users mailing list > squid-users@lists.squid-cache.org > https://lists.squid-cache.org/listinfo/squid-users >
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