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Killing Floor 2


  • Game Port Default: 7777 UDP Handled by: LinuxServer-KFEngine.ini
  • Query Port Default: 27015 UDP Handled automatically or handled by parameters. The 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. The formula for finding the steam port is 12783 + Game Port.


Server Config Information

LinuxGSM installations contain configSubDir=servername in the command line by default, which creates a folder for config files named after the server. The default directory is /home/user/serverfiles/KFGame/Config/kf2server . Use these files to change server settings.

Workshop Content

Killing Floor 2 supports Steam Workshop.
Players on the Epic Store will not be able to download files hosted with the 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 iotop command.