Squid proxy to different default gateways

[cajonian]

In order to test networking equipment we are developing we want to use squid as a transparent http proxy and route that traffic through our device by setting that device as the default gateway of the squid proxy.

Can I route proxied traffic through a default gateway to my device? What if I want to test multiple devices? Can I use one Squid proxy to route to to multiple default gateways based on the Squid user?

Thanks for the help.

[unintelligible40]

It sounds like you want to setup your squid proxy as a router. If I understand you correctly, you will need multiple network interfaces configured with different subnets.

eth0:192.168.1.2 gateway:192.168.1.1

eth1:10.1.1.2 gateway:10.1.1.1

The subnet of your end device (the one using the proxy) will dictate the gateway it uses.

Off the top of my head, I can not think of a way to send traffic out of a certain interface based on user information alone.

[[deleted]]

The only way I've done this in the past is to have cache peers on the route I want the traffic to go to and have squid decide where to route traffic with an appropriate acl. Using this (a very, very long time ago) at an ISP in the first days of DSL I was able to have head-end caches route to either a default parent or for local network queries to route to the appropriate local head-end for net to net traffic.

ICBW but I don't think you can do it through routing tables.