How to ban an IP address in GMod

Arguments

minutesRequired

Ban length in minutes, 0 for permanent.

ipRequired

IP address to ban.

What it does

Blocks the address itself rather than a Steam account. IP bans can hit innocent players behind shared connections, so prefer SteamID bans. Same as addip.

The game's own description: Add an IP address to the ban list.

Good to know

• Save with writeip.

Run it on your server

On a SLASHPLAY server, type it in the Console tab of the server page; the reply shows right under it. A value set there lasts until the server restarts. To keep it, add the line to garrysmod/cfg/server.cfg. New to this? Start a GMod server first.