Assigning to port 80/443 for per-App IP addressing

Apps and Virtualization
2

As far as I can determine, the port conflict is with ports 80/443 within the TrueNAS GUI. Try the following:

  1. Go to the TrueNAS GUI → System → General Settings → GUI → Settings.
  2. Change the http port to 81 and the https port to 8443. (Actually, any port other than 80 and 443 that isn’t in use, but note it down).
  3. You will need to restart the GUI per the on-screen prompt.
  4. Go to your App and then change the port to 80 and 443 respectively.
  5. After verifying functionality, go back to TrueNAS GUI → System → General Settings → GUI → Settings and reset the port back to 80/443 respectively.

Source: per-App IP addressing - how does it work? - #21 by MarkHoltz