The only issue with HA and port forwarding is that discovery probably isn’t going to work properly. But if you aren’t using that then it should be ok.
Walt, Can you explain how I would upgrade HA to the latest version while running on a Mac. I understand this isn’t the OP question, but I have not been able to find any answers to my particular question. I have a running version (0.84) running just fine on an older Mac, but can’t find any details on how to upgrade. Thanks and my apologies to the OP for hijacking his question.
You can look at the @moralmunky guide here which has as good amount of information to get you started.
Really, it just comes down to getting a modern Python installed and then using pip3 to install home assistant.
I prefer to use Homebrew so for me it’s a matter of installing Python 3.7 from Homebrew then pip installing home assistant.