9 GUIDES
Left 4 Dead 2 Server Guides
Left 4 Dead 2 dedicated server setup with SteamCMD, GSLT tokens, server.cfg configuration, game modes, RCON, SourceMod/MetaMod, custom campaigns, and troubleshooting guides.
Adding Custom Campaigns and Maps to L4D2Install custom campaigns and maps on your L4D2 server using VPK packages or raw BSP files. Covers the addons directory, loading custom maps via changelevel, and workshop campaign setup.Updated Apr 29, 2026How to Set Up a Left 4 Dead 2 Dedicated ServerInstall a Left 4 Dead 2 dedicated server on Linux using SteamCMD (AppID 222860). Covers anonymous login, srcds_run binary, GSLT token requirement, and your first launch command.Updated Apr 29, 2026Installing SourceMod and MetaMod on L4D2Install MetaMod:Source and SourceMod on your L4D2 dedicated server to unlock admin management, plugins, and advanced server control. Covers download, file placement, and admin setup.Updated Apr 29, 2026L4D2 RCON: Remote Server AdministrationSet up and use RCON to remotely administer your L4D2 server. Set rcon_password in server.cfg, authenticate from the in-game console, and run admin commands without direct server access.Updated Apr 29, 2026Left 4 Dead 2 Game Modes and MutationsAll Left 4 Dead 2 server game modes: co-op, versus, survival, scavenge, realism, and mutations. Set the mode via mp_gamemode in server.cfg and change maps with changelevel.Updated Apr 29, 2026Left 4 Dead 2 Server Configuration (server.cfg)Configure your L4D2 server using server.cfg: set hostname, RCON password, game mode, difficulty, rate limits, and other key Source engine cvars.Updated Apr 29, 2026Left 4 Dead 2 Server Port ForwardingOpen the correct firewall ports for an L4D2 dedicated server: UDP 27015 for game traffic, TCP 27015 for RCON, and the auxiliary UDP range for Steam communications.Updated Apr 29, 2026Left 4 Dead 2 Server TroubleshootingFix common L4D2 dedicated server issues: server not in browser (missing GSLT), sv_consistency errors, players unable to connect, server crashes, and VAC security questions.Updated Apr 29, 2026Running L4D2 Server as a Linux systemd ServiceSet up a systemd service for your Left 4 Dead 2 dedicated server so it starts on boot and restarts after crashes. Includes a complete unit file with GSLT token and management commands.Updated Apr 29, 2026