Connectivity Problem with Astroneer - Astroneer dedicated server fails to open UDP port 7777

Technical Support
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1

System Information

Field Value
Operating System Linux - Debian GNU/Linux 13 on x86_64
Product AMP ‘Proteus’ v2.8.0.4 (Mainline)
Virtualization Podman
Application Astroneer
Module GenericModule
Running in Container Yes
Current State Ready

Problem Description

Issue

Running the Astroneer dedicated server (App ID 728470) inside an AMP instance (version 2.8.0.4) on a Debian Linux host running in a container/Podman environment. After switching the Proton version to GE-Proton9-1 to resolve initial startup errors, the server process successfully launches and the RCON/console port (1234 TCP) changes to a listening state. However, whether the ZeroTier virtual mesh VPN is active or disabled, and despite waiting over 5 minutes for the Unreal Engine process to initialize, the game port (7777 UDP) persistently fails to open or show as listening, preventing any connection to the server.

Reproduction Steps

  • Installed AMP version 2.8.0.4 on Debian Linux running inside a container environment.
  • Deployed the Astroneer dedicated server (App ID 728470) via SteamCMD in AMP.
  • Changed the Proton version to GE-Proton9-1 in AMP settings to allow the server binary to start successfully.
  • Verified that the server starts and listens on the RCON/console port (1234 TCP), then waited for the Unreal Engine process to open the game port (7777 UDP).
  • After 5 minutes port 7777 still does not listen.
2

Not sure on this, but found another post on Astroneer where Greelan noted it was working with GE-Proton10-34. Might try that.

3

Thanks for the suggestion! I actually tried that version, but the server wouldn’t even start with GE-Proton10-34. The only version I’ve been able to get the server to boot up with is GE-Proton9-1.