Port forwarding help on linux maybe?

[ZeusXI]

So I am trying to run some games on a linux server, and getting nowhere with them and having some struggles.

 

I am using...

Ubuntu 20.04

8c16t amd cpu

64GB RAM

 

I have Craftopia up and running with no problems what so ever. Ports are good, ufw allow (port) is good, and friends can connect from whereever they may be.

But when I make a fresh Valheim, or 7 Days to die, I can get a complete fresh install on windows working no problem, but when I fire a fresh install up on Linux, for some reason it loads, and then never am able to connect. 

[Ralphred]

2 hours ago, ZeusXI said:

server

Does your server do routing for your network or is it just in a DMZ?

[ZeusXI]

29 minutes ago, Ralphred said:

Does your server do routing for your network or is it just in a DMZ?

My server is to host games

 

[Ralphred]

13 hours ago, ZeusXI said:

My server is to host games

Okaaay...

Post the output of

sudo iptables --line-numbers -nvL ufw-user-input
sudo ip6tables --line-numbers -nvL ufw6-user-input

unless it matches the ports for the gameserver you are trying to run, then post the output of 

sudo ip route

instead.

[ZeusXI]

7 hours ago, Ralphred said:

Okaaay...

Post the output of

sudo iptables --line-numbers -nvL ufw-user-input
sudo ip6tables --line-numbers -nvL ufw6-user-input

unless it matches the ports for the gameserver you are trying to run, then post the output of 

sudo ip route

instead.

 

 

[Ralphred]

There is stuff missing from the config for Valheim.

Create the file /etc/ufw/applications.d/valheim-server and add the following:

[valheim-server]
title=valheim-server
description=Valheim server listening port config
ports=2456:2457,4380,27000:27031,27036/udp|2456:2457,27015:27030,27036:27037/tcp

and activate it with

ufw app update valheim-server
ufw allow valheim-server

 

To deactivate use

ufw status numbered

to get its rule index numbers, then

ufw delete <high index number>
ufw delete <low index number>

 

If you wanted to include the "open ports" and "close ports" commands in your startup/shutdown script for the server you can use 

for rule in $(ufw status numbered|awk '/valheim-server/'|sed 's/\[ \?\([0-9]*\)\].*/\1/'|sort -r);do ufw --force delete ${rule};done

  on the shutdown side.

 

You'll need to make a /etc/ufw/applications.d/7days2die-server file too, post it here if you want it checked, but valheim is more complicated so you should be fine with syntax.