Just curious about the cross-compatibility after I noted down the port numbers a server requires to portforward on his NAT router. I got these port numbers from the server launcher (or forums for Doomsday which I think is outdated because it contradicts the port found in-game).
Doomsday 1337 TCP/UDP <!-- m --><a class="postlink" href="http://forums.newdoom.com/showthread.php?t=27578">http://forums.newdoom.com/showthread.php?t=27578</a><!-- m -->
Doomsday 13209 TCP/UDP In-game Start Server
Odamex 10666 TCP/UDP Odamex Server
Skulltag 10666 TCP/UDP Internet Doom Explorer
Vavoom 26000 TCP/UDP vavoom.txt
ZDaemon 10666 TCP/UDP Server Launcher
Odamex, Skulltag & ZDaemon all share the same port 10666. All 3 were forked/branched off ZDoom 1.22 (Odamex is continuation from csDoom which was off ZDoom 1.22). Does that mean they could actually play against each other? Eg. A Odamex client plays with a Skulltag server. Or a Skulltag client play on a ZDaemon server? Etc, etc. The permutations are endless!
Even if they don't do cross-compatibility, it would be nice that they did under certain conditions. Nice to keep the Doom online internet gaming strong and alive for many years to come (instead of seeing it die off to these over-rated today's FPS games.
PS: And yes, I figured that if one wishes to host a Odamex, Skulltag, ZDaemon servers, then they must use different ports other than 10666.