As the title says, it's been 2 years..

I remember hearing about someone being able to get one running with their own program. I don't know anything else.

Other than that, apparently the best way to go for dedicated servers is swbfspy. It is compatible with this version of the game, but you need some extra setup IIRC.

In google. But i dont think it still useful with new Galaxy service (only for lan maybe).

Projectsonic
sfbfspy provide dedicated server tool?

I think that most of the stuff you're looking for on this is here, though I'm no expert: http://www.swbfgamers.com/index.php?topic=10840.0

Unfortunately, GOG added their own layering of netcode and changed the master-server address, making SWBF2SM and therefore SWBF2RM no longer compatible with the game. The only remaining way to host a dedicated server left is to use a multitude of tools and programs to essentially nigger-rig things together. And if that wasn't enough the setup process is also fairly complicated for the average user but if you insist I recommend contacting either LeKeks or Legitosity for support.

LeKeks Discord: LeKeks#6550

Legitosity Discord: Legitosity#1317

Unfortunately? GOG did it only for GOG Galaxy build (obviously why). Offline build steel old 1.1 version that compatible with 1.1 DS server for lan\emulated lan (GameRanger\Hamachi) servers.