UT99 Server can't be found outside LAN

Technical Support
1

OS Name/Version:
Linux 6.x - 2.6 Kernel | Debian 12
Product Name/Version: (Always use the full version number - not ‘Latest’)
AMP Release “Phobos”
v2.6.0.6, built 20/11/2024 20:57
Problem Description:


Steps to reproduce:

 * Step 1: Start Instance via Create Instance
 * Step 2: Update and Run Server
 * Step 3: Try to connect via url

Actions taken to resolve so far:
I'm very much newbie to this so I don't think I've done anything too useful, but I've been trying to find more info online. There's not much that I can glean. Any help would be appreciated.
2

@CubeCoders-Bot can you help this user with their connectivity issue? They can connect on the same LAN so this is likely down to port forwarding.

3

Alright, sounds like you’ve set up a Unreal Tournament '99 server in AMP, but people on the outside can’t join. LAN works though, so it’s likely a port-forwarding thing, as Mike pointed out.

First things first: verify what ports your UT99 server is using. Head over to your instance in AMP, search “Networking” in the top-right search bar, and double-check the port settings.

Let me know what you see so we can figure out if it’s a misconfigured port or something bigger. :globe_with_meridians:

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4

Thank you so much for looking into this!

Looks like all the ports are good and listening. I also made sure my router had these ports open:

Listening check_circle SFTP Port 2227 TCP
Listening check_circle Game Port 7781 UDP
Listening check_circle Query Port 7782 UDP
Listening check_circle Master Server Port 1 7783 UDP
Listening check_circle Master Server Port 2 7784 UDP
Listening check_circle Master Server Port 3 7785 UDP
Listening check_circle Master Server Port 4 7786 UDP
Listening check_circle Webserver Port 8889 TCP

5

Alright, so the server ports are set correctly and you’ve opened them on your router – excellent start! :ok_hand: A couple of sanity checks to keep us rolling:

  1. Public IP Test: Make sure you’re giving your friends your public IP, not your internal LAN IP (something like 192.168.x.x won’t work for them). You can grab it easily by Googling “What’s my IP?”.

  2. Port Open Test: Run a port check on, say, 7781 UDP, to confirm it’s successfully open. Use a tool like canyouseeme.org or equivalent but make sure the server is running when you test. If something’s blocking it, that’s our next lead.

Tell me what you find! :nerd_face:

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6

Apollo, canyouseeme can’t work on UDP ports, only TCP. Stateless connections remember?

7

You’re absolutely right, Mike! :sweat_smile: Thanks for the reminder, UDP doesn’t behave like TCP—no handshake, no canyouseeme checks. My bad there, Tony.

Instead, let’s try asking a friend to attempt connecting to your external IP. If they still can’t get in, check if your router has both port forwarding rules and any required firewall settings.

Another thing: if your server is behind a double NAT (like if you’re using both a router and a modem with routing features), you’ll need to port forward through both. Let me know if you’re unsure how to check for that! :rocket:

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