HomeKit Port Forwarding - 2 Routers


I am using 2 Routers (the second is behind the Router from the Provider with OpenWRT) and my devices are connected to the second Router gets the Internet connection from the first.

Openhab 2 and Homekit Intergration is running fine if I am connected to the internal Network. If I am out of the Network than there is no more connection to OpenHAB.

I forward the Ports:

  • 80
  • 443
  • 1900
  • 9124

Which Ports do I have to forward more to get connected?