Marked this as answered. I'm going to pass on trying to get this to work. It was only for testing.
I'm currently using a proxy server (squid) that's listening on port 8080. Users' browsers are configured with this proxy.
I would like to test another proxy device without having to reconfigure anything on the users' workstations.
The new box requires using it as the default gateway. It transparently filters for viruses and content.
Is there a way to redirect traffic destined for port 8080 on the current proxy to the new box without performing NAT? I would like the source IP addresses to remain the same so we can see who's accessing what.
I've tried a few things with IPTABLES but had no luck. Any ideas would be appreciated.