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1) Prerequisites

  • A working Garry’s Mod Dedicated Server (srcds).
  • RCON enabled with a defined password.

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2) Configure RCON on the GMod server

  1. Open or create the following file:
    garrysmod/cfg/server.cfg
  2. Add or update these minimum RCON settings:
rcon_password "YOUR_PASSWORD"
// Optional (if supported):
// sv_rcon_banpenalty 30
// sv_rcon_maxfailures 5
  • rcon_password: Must match the RCON Password you enter in the panel.
  • RCON usually connects through the game port (most often 27015). If you started the server with a different -port, enter that port in the panel.
  1. Restart the server or change the map to apply settings.
  2. On the firewall or cloud firewall, allow the server port (for example 27015) for the panel IP.
The RCON port usually matches the game port. Use the same -port value from your startup parameters in the panel.

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3) Create a server record in the panel

  1. Go to the Servers page.
  2. Click Add Server.
  3. Fill in the fields:
    • Plugin: RCON
    • Server IP Address: The server IP or an accessible domain
    • RCON Port: The server port (for example 27015)
    • RCON Password: From server.cfg then rcon_password
  4. Click Check Plugin Connection.
  5. If successful, click Publish to save.
The RCON Password in the panel must exactly match the rcon_password in server.cfg.

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4) Troubleshooting

  • Connection failed or timed out
    • Are IP and port correct? Did you allow the port in OS and provider firewalls?
    • Can the server be reached (ping, tracert)?
  • Unauthorized or wrong password
    • Do rcon_password and the panel RCON Password match?
    • After many failed attempts, a temporary block may occur. Wait briefly, then try again.
  • Settings not applying
    • Is server.cfg in the correct directory?
    • Did you restart or change the map after editing?

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5) Security tips

  • Use a strong, long, and unique rcon_password.
  • Open the port only to the panel IP.
  • To protect against brute force attacks (if supported), increase sv_rcon_maxfailures and sv_rcon_banpenalty values.
  • Change the RCON password regularly and monitor logs.
  • Serve your panel over HTTPS.

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6) FAQ

What is the default port?
Usually 27015. If you started the server with a different -port, use that port. Can I use a domain instead of an IP?
Yes. You can use a domain the panel can reach. Can I add more than one GMod server?
Yes. Create a separate record for each server and enter the correct IP, port, and password. How should I write commands?
Do not use a leading slash in the panel. For example changelevel gm_construct, sv_password "", kickid 12345.