Minecraft server network problems

[NobodyOfNote]

I'm posting this in networking as I'm pretty sure my problem has to do with that (though I'm not completely sure of it). I have deployed a Minecraft server, and I am able to join it, but no one outside of my network is able to join it. I have tried everything, but nothing is working. My port is forward, it is pointed to the correct internal IP, I'm using the correct external IPv4. I have even tried using a different port, nothing. The firewall shouldn't be a problem, I'm using MineOS, because Ubuntu would have the same problem, so I thought it was the firewall being too complicated for me. MineOS Comes with a pre-configured firewall. Please help, I am at a loss, and I am ready to give up.

[kelvinhall05]

17 minutes ago, NobodyOfNote said:

because Ubuntu would have the same problem,

You know this how?

 

 

You've probably configured a firewall somewhere or your port forwarding incorrectly. Doublecheck everything and try disabling all firewalls temporarily to see if that fixes it. 

[NobodyOfNote]

I've tried disabling firewalls on the server, on the router, and still doesn't work. I even set Ubuntu to allow all ports through, nothing changed. So I switched to MineOS Turnkey, thinking it would fix it, but it didn't. I have redone settings and port forwarding multiple times, and nothing works.

[Tarry Hesticle]

If you cant to find an issue like @kelvinhall05 said, you might want to try using ngrok, since that would bypass the firewall completely, plus you wouldn't have to deal with port forwarding.

[Catsrules]

What port are you using?

 

By default MineOS has 22 (ssh), 8443 (webui) and 25565 (default minecraft) open. Anything else you will need to open manually using iptables.

 

 

As you can access the server locally on your network, I would focused my efforts on the router, port forwarding and router firewall setup. My guess is something is setup incorrectly there.

 

See if you can look up a manual or something on your router and make sure your not missing anything on the port forwarding setup.

[NobodyOfNote]

Im using 22 for command line, 8443 to access the UI, and 25565 for minecraft connection. I tried opening up ports 25565-25575, and tried using different ones. I have redone my port forwarding in multiple ways, still nothing. I will look into ngrok, but I dont have much hope for anything right now.

[MrZombie295]

On your routers port forwarding setting what is the protocol set to? (I would check both the Firewalls on the Router and the Server)

It needs to be both TCP and UDP.

 

Have you tried to connect via your Public IP address on your own machine?

 

Have you selected the right IP, the one that is running the Ubuntu Machine (double checking)?

 

Have you given a port checker website a try to make sure that you can verify the port is open.

 

A trick you could also use is to try to telnet to the ip and port because if you can telnet and it flashes then you can connect to it.

[NobodyOfNote]

The protocol is only set to TCP, so I can set it to both. I can connect to the server in my internal network, so it is definitely the router (as far as I know). I am sure the correct IP is pointed to the port forward. I used a port checker and it says the port is open. Also I feel its important to say it is not an Ubuntu machine (my old one was), I'm using MineOS Turnkey, which is Debian based.

 

EDIT: I set the protocol to TCP/UDP. It did nothing.

[MrZombie295]

Is there any error message showing on MC client?

 

Can you see anything on the console of the MC Server?

 

Is the firewall enabled on the Debian based server?

On 4/2/2020 at 4:18 PM, NobodyOfNote said:

I tried opening up ports 25565-25575

I would suggest opening 25565 just for now to make sure that it wasn't the rule it didn't like. (TCP and UDP)

 

I don't know which router you use but on mine where i have my own servers setup on it will ask for both external facing ports and internal for the router to listen on  and you make sure that they are the same ports that they are asking for.