I have a DDNS domain name through No-IP that's working with DSM, and I can use https with LE certificates no problem. I want to use reverse proxy to stop so many ports being forwarded on my Netgear Orbi router. I'd be happy to just forward 443 to the nas and have everything coming through there. The problem is, I can't stop "5001" appearing at the end of the urls. If I enter "myurl.com" into Firefox it immediately becomes "myurl.com:5001". If port 5001 is forwarded I get to the DSM login. If I close 5001 I can't connect. I've set up "dsm.myurl.com" to specifically get to DSM, because I want "myurl.com" to be for my website. If I enter "dsm.myurl.com" as soon as I press return it instantly becomes "myurl.com:5001". I just can't stop the "5001" appearing automatically. It's not Firefox - it happens in DuckDuckGo on my Android phone as well, and also happens in Edge and on different computers. I've tried setting up a reverse proxy for dsm.myurl.com to go from 443 to 5001 but if 5001 is closed on the router I can't connect at all as the "5001" keeps appearing no matter what I do. If I type "myurl.com:443" the moment I press return "443" changes to "5001". Any thoughts greatly appreciated! Thanks.