(thanks Frans) has word that Half-Life 2: Deathmatch, Source SDK, and Source
Engine updates are now available. The updates offer enhanced support for HL2 DM,
DM map making, and fixed administrative functions for server operators.
It's quite common to have a 'developement' PC with all of your tools that isn't hooked up to the outside world and a dedicated Game PC that you test on. That's what I do. What's so difficult about that?