If you want https it’s gotta be a external DNS record anyway
Not sure what you mean by that, but off the top of my head, you can get certificates via challenges that prove DNS control (rather than checking if the DNS points to your server), and you can get wildcard certificates so you don’t even have to expose the existence of subdomains.
And that’s ignoring the option of using your own CA, which only really works with your own devices, but for local access might be viable.
Not sure what you mean by that, but off the top of my head, you can get certificates via challenges that prove DNS control (rather than checking if the DNS points to your server), and you can get wildcard certificates so you don’t even have to expose the existence of subdomains.
And that’s ignoring the option of using your own CA, which only really works with your own devices, but for local access might be viable.