rcon <command> after rcon_password. The ones you use most are changelevel <map> to change the map, status to list players, kick <name> to remove someone and z_difficulty <Easy|Normal|Hard|Impossible> to set the difficulty. Settings you want to keep go in server.cfg.
How to run L4D2 server commands
A console command lasts until the next restart or map change. Many options also have a switch in Game settings, which is easier.
Map and campaign commands
Player commands
Game and server cvars
Campaign start maps
Type
maps * if a name doesn’t work; it shows the exact names on your server.
Frequently asked questions
How do I change the map on my L4D2 server?
Typechangelevel <map> in the Console. To start on that map every time, set Start map in Game settings.
How do I give myself admin commands?
Vanilla Left 4 Dead 2 only has RCON. For an in-game admin menu, install SourceMod. See SourceMod admin menu basics.Why does my console change disappear?
Console changes last until the next restart. Add the line toserver.cfg to keep it.
How do I ban someone permanently?
Find their user ID withstatus, type banid 0 <userid>, then writeid.
Related guides
Left 4 Dead 2 server guide
Every Left 4 Dead 2 page in one place.
Fix consistency errors
sv_consistency explained.
Vote settings
sv_vote_* cvars.
SourceMod admin menu
sm_kick, sm_ban and the admin menu.
Use the server console
Send commands from the panel.
Tested by the FREAKHOSTING team on 30 October 2026 (Left 4 Dead 2 on our Game Panel). Steps may differ slightly if the game changes.
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Last Updated: October 2026