northertech

One of the three subreddits I still visit.

I am hosting 2 public game servers with my setup. My VPS exposes only those ports and I have my DNS on the same provider. That tailnet only has those servers and the VPS. The actual server boxes block all traffic except through the tailnet. The hard part is the reverse proxy on the VPS if you have never done it before.

Use Tailscale, it's stupid simple. it is a Wireguard wrapper anyways.

For built in listeners use ncat, but nmap package is not always included. If you are on Windows find some listener Poweshell script, it will be under 10 lines, with Test-Connection. When I was a SysAdmin one repeated problem was UDP traffic was not working. When you tested the TCP port it would work, verifying that the connection is there, but UDP for a variety of reasons is problematic.

With TCP there are built in listeners on OSs which you can use to test. Also TCP will work before UDP. For whatever reason firewalls and such do weird things with UDP traffic. I always use a cli tool that I can't remember the name of for testing.

Yes it is uncommon, as people have mentioned it is a Wireguard wrapper. Try just using Wireguard and troubleshoot from there. I would want to know what that 'simple' solution is failing. Your workaround could have similar issues.