I'd like to study some MMORPG's protocols (I am a game programmer), but they all use "hackshielding software" that disallow me to do much from the computer they are running.
I want to know how I could make my computer's connection route through another computer in my LAN so that I could edit the packets. I thought about ARP poisoning my machine, but I don't know wheter I can actually edit packets coming from an ARP poison attack.
From what I could tell using Wireshark, my very operating system (Windows XP) is rerouting the packets to and from my gateway, so I don't know wheter there actually is a way to live edit them (if anyone knows if that can be done using Windows Filtering Platform, I'd be glad to know).
Another possibility would be to manually set my other computer as the gateway of the first, but then I don't know how to make it actually act like a "gateway" (ie. route the packets to the actual gateway).
Can anybody here help me? I'm sorry, I'm sure this all looks really newbie stuff. That's because networking really isn't in my "field of knowledge".