Connectivity Problem with Assetto Corsa Competizione - ACC Server only shows for LAN

System Information

Field Value
Operating System Linux - Ubuntu 24.04.3 on x86_64
Product AMP ‘Phobos’ v2.6.4.2 (Mainline)
Virtualization None
Application Assetto Corsa Competizione
Module GenericModule
Running in Container No
Current State Ready

Problem Description

Issue

I wanted to setup a server for me and my friends on ACC, but its only shown to me in LAN.
I forwarded the Ports on my Router already, and normally it should be set up right and be ready to go… atleast I thought so.
I really dont know how to fix it.

Reproduction Steps

  • Created Instance, Connected with my Steam, installed ACC, Installed Wine on Ubuntu Server, Forwarded the Ports
  • Created the Instance for ACC
  • Connected with my Steam so ACC can be installed
  • Installed Wine on Ubuntu Server so it can download ACC even tho its a Windows application
  • Forwarded the Ports on my Router