Duckdns port forwarding work only with *>8123 (any>8123) on pfsense

Alberto,
I sympathise, I’ve had a lot of experience with this issue recently so I suggest that you look at that thread.

Apologies if any of the following is a bit basic but with those out of the way… : - )))

  1. What router do you have?
  2. I assume you are using https://myfortressofsolitude.duckdns.org ? i.e. Don’t use ANY port!
  3. If you are then https defaults to port 443 so port 8123 doesn’t enter the equation (if you also use nginx, read up on that too)
  4. The thread should allow to to set everything up AND will allow you to access your HA locally (with 8123)without having to go out onto the Internet to come back via https
    Have a read and a play and come back if you have any issues
    Mutt