I am trying to setup portforwarding on a Fritzbox 7490 running FRITZ!OS 6.9 to enable a FHEM application to be reachable from the internet.
If I choose automatic port forwarding and allow all ports to be opened (there are tick boxes to allow this), everything works.
For security reasons I would like to only open the ports I need via the static port forwarding option (see https://en.avm.de/service/fritzbox/fritzbox-7490/knowledge-base/publication/show/893_Setting-up-static-port-sharing/).
However when I click "New Sharing" -> "Port Sharing", I have no drop-down list "Application". Actually there is no form or option displayed at all. I only can click "OK" or "Cancel". If I click "OK" there is a info box asking me to select an application.
I would be very grateful for you help! Thanks a lot.