Battleangel

Unreal Tournament 2003 Gateway is naught little application that makes life a lot easier for UT2k3 players.

What is ut2k3_gw?
The Unreal Tournament 2003 Gateway is a gateway application that intercepts traffic between the Epic Masterservers and your UT server. More specifically, the gateway drops packets from the masterserver that was meant to tell your UT server to disconnect users due to invalid CD-keys. There’s also an option for emulating your own masterserver. This can be good if you’ve misplaced your CD-Key =).

UT Servers running ut2k3_gw
Even if serveradmins install the gateway, the users still have to find the servers using it in order to play without CD-Keys. A serverbrowser that lists all servers using ut2k3_gw can be downloaded from the “Downloads” page.

Bookmarks
http://elite.to/ut2k3gw
http://ut2k3gw.da.ru
#ut2k3gw_chat on EFNet

Legal
The gateway itself does not in any way alter the original game; it alters your network traffic just like any other proxy or firewall. This behaviour is not illegal. The software found on this site is free to use and distribute as you see fit.

Good point! I also recall that there was talk in various states (USA) about criminalizing firewalls among other things. Not that it applies to this but it is a good example of what similar applications can achieve.