Most settings are in serverconfig.xml: world (GameWorld, WorldGenSeed, WorldGenSize), game name (a new GameName starts a fresh save), difficulty, day length, loot abundance, zombie speeds, blood moon frequency, PvP settings, land claim options. Stop the server, edit, start.
Ports and the player cap are managed by the panel; change Game Difficulty on the Startup page.
Mods: upload each mod folder to Mods/. Server-side mods (XML changes) work without players installing anything; mods with new assets must also be installed by every player.
