Yes, we have a whitelist ability also, but it is definitely a last resort. The game is mostly dead and difficult to discover for new players. We don't want that roadblock if we can avoid it.
I was going to mention how much I loved that game, until I realized I played UT99. Time sure does fly...
You can find links to download the game, get a cd key, and configure for the new master servers so you can find servers online. Game tracker still lists this game, so you can check there to find the most popular servers which are still active and have players.
Game companies invade our privacy and destroy our computer freedom with ineffective malware tier rootkit solutions only to fail to solve the problem in the end. Their business model depends on enabling people to play with any random from anywhere in the world. They are forced to trust untrustworthy clients. The truth is people should not allow their computers to talk to strangers.
People should be able to play with whomever they wish.
Without a whitelist, it's only a matter of time before an actual cheater joins their server and ruins their fun.
Enumerating badness just doesn't work.