How to create a Garry's Mod server? The complete guide

Creating a Garry's Mod server can be done in two ways: self-hosting with Valve's SRCDS tool (free but technical) or through a host that delivers a ready-to-play server in a few seconds. Here are both methods, step by step.

Method 1: self-host with SRCDS

1. Install SteamCMD and SRCDS

The dedicated GMod server relies on SRCDS (Source Dedicated Server). You first need to install SteamCMD, then download the Garry's Mod server application (app ID 4020) onto your machine.

2. Choose a gamemode

This is the heart of GMod: Sandbox (the default sandbox mode), DarkRP (the most popular roleplay mode), Prop Hunt, TTT… The gamemode is set in the launch line with the +gamemode parameter.

3. Launch the server

A typical line looks like srcds -console -game garrysmod +gamemode sandbox +map gm_construct +maxplayers 32. The server then generates its configuration files in garrysmod/cfg/.

4. Open port 27015

For your friends to join from outside, you need to open UDP port 27015 on your router (NAT forwarding) and share your public IP. This is the step that trips up most beginners: dynamic IP, firewall, CGNAT used by some ISPs.

The limits of self-hosting

• Your PC has to stay on permanently for the server to be reachable.
• It shares its power with your other uses: guaranteed lag if you play on the same machine.
• No Anti-DDoS protection: exposing your personal IP is risky, especially on a popular RP server.
• Updates, backups and security are entirely on you.

Method 2: go through a host

A host removes all the technical work: no port to open, no IP to expose, server online 24/7. At Fly-Serv, creation is instant. You pick your plan, the server is delivered in a few seconds on Ryzen 9 7950X3D machines, and the FlyPanel panel lets you switch gamemode, install Steam Workshop addons and manage files in one click. Discover Fly-Serv's Garry's Mod server plan, with Anti-DDoS included.

Simple rule: for an afternoon of testing with friends, SRCDS is enough. For a permanent, smooth RP server, a host saves you precious time.

Conclusion

If you're just starting out or aiming for a stable community, create your Garry's Mod server with Fly-Serv from €2.99/month. Going for roleplay? Follow up with our guide How to create a Garry's Mod DarkRP server.