Killing Floor 2


  • Game Port Default: 7777 UDP Handled by: LinuxServer-KFEngine.ini
  • Query Port Default: 27015 UDP Handled automatically or handled by parameters. Formula for finding query port assigned automatically is 19238 + assigned game port.
  • Web Admin Default: 8080 TCP Handled by: KFWeb.ini
  • Steam Port Default: 20560 UDP Handled automatically. Formula for finding steam port is 12783 + assigned game port.


Server Config Information

Default LinuxGSM installs have configSubDir=servername set in the command line which will set your priority config files to be in /home/user/serverfiles/KFGame/Config/kf2server directory, use these files to change settings on your server.

Workshop Content

Killing Floor 2 supports Steam Workshop.

High disk IO using Steam Workshop

Killing Floor 2 will check workshop files at server start and when map changes occur.
There is a potential problem with Killing Floor 2 servers using the steam workshop that causes server disk usage to read/write at 100% and could damage hardware.
To avoid this problem keep the amount of workshop content as low as possible.
Disk IO can be monitored with the ioptop command.