Connectivity Problem with Team Fortress 2 (64 Bit) - cannot connect to server

System Information

Field Value
Operating System Linux - Debian GNU/Linux 12 on x86_64
Product AMP ‘Callisto’ v2.5.0.12 (Mainline)
Virtualization Docker
Application Team Fortress 2 (64 Bit)
Module GenericModule
Running in Container Yes
Current State Ready

Problem Description

Issue

The only way that I am able to try and connect is via the Steam://connect function. This gives me the following error message (sadly in german): “serverbindung nicht möglich da vom server angegebene anw-id ungültig ist”. I would translate it as follows: “Server connection not possible, since the application-id given by the server is not valid”. Sounds to me like the server is not aware that it is a TF2 server. I do not know where I have to add it. Thanks for you help!

Reproduction Steps

  • Create Server
  • add Game Server Login Token
  • add Server Account ID
  • Server Account Token
  • I DID NOT yet port forward, but am testing in my local LAN
  • try connecting via web interface
  • try connecting via ip