Because I wanted to learn Linux, I switch from a Windows NT Proxy/Firewall to a Linux based. Among other things, with WinGate I could do tcp mapping.
From my client I would specify my proxy server with port 2000. On the proxy it would forward it to my external SQL server on port 1500. How could I do that on Linux. I think I need to use portmap, but I don't understand it. I read the docs and didn't understand it. Could someone tell me step by step what I need to do? I'm running squid as my proxy on a RedHat 6.1.