Issues with ZeroTier and MineOS on TrueNAS Scale 24.04

Hello everyone,

I’m running TrueNAS Scale 24.04 on a DELL PowerEdge T20 server and recently set up MineOS via the TrueNAS App Catalog. My goal was to use ZeroTier to make my Minecraft server accessible for other players over the internet.

The installation of both MineOS and ZeroTier went smoothly after fixing a few minor issues.

The Problem:

I can connect to the Minecraft server locally on my network without any problems, but I can’t access it via ZeroTier.

What I’ve Tested So Far:

  • I can confirm that my ZeroTier connection to the TrueNAS server works, but only on specific ports.
  • For example, I can ping my Plex server on port 32400 through ZeroTier, but I can’t access the Minecraft server on port 25565 or the MineOS Web GUI on port **30015.
    (everything done via telnet on Windows while connected to Zerotier).

My Guess:

I suspect this might have something to do with how Kubernetes is handling ports in TrueNAS. Since I don’t fully understand Kubernetes, I’m wondering if there are specific settings I need to enable to allow traffic through certain ports, especially into ZeroTier.

Any insights or suggestions would be greatly appreciated! If you need more information, feel free to ask—I’m not sure if I explained everything clearly.

Thanks in advance!