PC reference

Map and content manifest audit · Left 4 Dead 2

Co-op and dedicated server planning · Co-op FPS

Player tools indexed: 4 Admin consoles: 4

Find missing, duplicate and differing entries

Player tools (4)

Instant interactive calculations and recipe planners

Server admin and config generation (4)

Config files, startup scripts and command wizards for running a server

FAQ

Which Left 4 Dead 2 server-admin tools are available?
We list 4 tools for Left 4 Dead 2: Preserving server.cfg editor, Permissions and multiplayer checks, Install, launch and ports, Map and content manifest audit. All of them run straight in your browser.
Which ports does Left 4 Dead 2 need open?
UDP27015 defaults to game and A2S traffic. Optional TCP27015 is RCON: configure your own password and restrict trusted sources. Client port 27005 is not a required inbound server port. Check actual -port, NAT and lobby reservations; a query does not prove map or plugin compatibility.
How do I install a dedicated Left 4 Dead 2 server?
Install it with SteamCMD — the dedicated server app id for Left 4 Dead 2 is 222860, so +app_update 222860 validate downloads or updates it. Config files usually live at left4dead2/cfg/server.cfg, left4dead2/addons/sourcemod/configs/admins_simple.ini, left4dead2/cfg/sourcemod/.
Do these tools cost anything or need installing?
No. Everything runs in the page: no install, no sign-up, no cost. Enter your values and the result appears instantly, and you can copy the generated configs and commands with one click.