How to Forward Your Ports for GMod

Written by tim raud
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"GMod," or "Garry's Mod," is a sandbox-style game that allows players to freely create any event or scenario they desire. When hosting a server for online play, it is important to forward your ports to allow other players to join your server. Port forwarding is where you open certain ports on your router to allow information in from outside of the network. You will need to access your router using your IP (Internet protocol) address.

Skill level:
Moderately Easy


  1. 1

    Click Start and open the Run program.

  2. 2

    Type in "cmd" to open the command box.

  3. 3

    Type "ipconfig" in the cmd box and a list of addresses will appear. Search for the address called "Default Gateway" and copy it down, then close the cmd box.

  4. 4

    Open your Web browser and type in the Default Gateway address found in Step 3.

  5. 5

    Enter the user name and password for your router.

  6. 6

    Click on the tab labelled "Port Forwarding/Port Triggering."

  7. 7

    Select the Protocol format and type in the port numbers, in the Inbound and Outbound columns, that need to be opened for "GMod." The list of ports that need to be opened are (in the order Protocol Inbound/Outbound); UDP 1200/1200, UPD 26901/26901, UPD 27000/27015, TCP 27020/27039, UDP 27015/27015, UDP 27020/27020 and TCP 27015/27015.

  8. 8

    Save the settings and close the router configuration page.

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