You can’t assign ports via DNS, what you need is a reverse proxy. Nginx proxy manager is easy to use and very popular.

Or “if you’re having trouble there is no manual, FAQ, or wiki, just join our discord troubleshooting channel” vomit

The best is when people tell you to RTFM and the information you need just straight up isn’t there.

You probably need an “allow established rule” not familiar with the interface youre using so i cant guide you mich further than that