Factorio Dedicated Server: Admin Commands & server-settings.json Guide

Data Verified: May 2026

Complete Factorio headless server reference. Configure server-settings.json, manage admins via server-adminlist.json, run RCON, and size hardware for late-game megabase tick stability.

Default file locations

Default installation paths for Factorio dedicated servers installed via SteamCMD.

Windows

C:\factorio\

Linux

/home/factorio/factorio/

Pro-Tip: Always stop the server completely before editing configuration files, or the server will overwrite your changes upon restart.

Default ports for port forwarding

Open these on your router and firewall before exposing the server to the internet.

Default ports for Factorio
ServiceProtocolPort
Game PortUDP34197
Query PortUDP34197
RCON / TelnetTCP27015

Frequently asked questions

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Host your own Factorio server

All hosting guides →

Step-by-step install and deploy walkthroughs (panels, ports, RAM sizing). Pair these with the command reference above.