My kid has asked me to setup a minecraft server for him. No big deal, did that before but this time he's asking for a modded server instead of vanilla.
- Ubuntu server 18.04.2
- Minecraft Forge 1.12.2
- Aether II mod v1.12.2
- UFW active and allowing port 25565
Testing the setup and I can successfully connect to the server from my desktop running Windows 10 and the same version of Minecraft Forge and the Aether II mod and after a minute or so, the player gets disconnected with this error...
internal exception: java.ioexception: an existing connection was forcibly closed by the remote host minecraft
The server doesn't appear to display any errors and I get the same disconnect whether UFW is active or not.
My google-fu is failing me and wondering if anyone here has run into this before and found a fix.