Netplay can't connect (SSBB)

[illuminaughty]

I'm trying to play Netplay on Super Smash Bros. Brawl.

I've tried with at least 5 people, hosting and joining, but nobody could connect to me and I couldn't to them, while no one else seems to have my problem.

When I hit connect with the code in netplay, it seems to freeze/load for a second but nothing opens and then it unfreezes. This happens no matter how many times I hit connect.

Anybody know how I could fix this?

[JMC47]

Your router or firewall could be blocking connection attempts. You may need to manually port forward and not use the traversal server.

[illuminaughty]

Through furthermore exploration of the problem, it seems, that I have no open ports to use with Dolphin and cannot forward any. I have tried everything I could in the router settings (default gateway) but none of them seem to open. It's strange because if I open a bittorrent client, it easily opens a port for its use. Of course though, the port it opens can't be listened to by Dolphin.

[illuminaughty]

https://ibb.co/23vw9xR

[illuminaughty]

So to everyone reading this, I fixed the problem. If you play Brawl with most people you will have to use the client at the following address: https://www.smashladder.com/guides/view/26oy/dolphin-ladder-build-5-0-321