Suddenly no connection to (running) Core

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4

Dear Noris,

thanks a lot for your answer.

I checked the following:

  1. The firewall still holds all exeptions as they were before (when it worked).
  2. I connected the QNAP to the router via cable, no effect.
  3. I checked the Fritz!Box. Surprisingly it is still on FRITZ!OS 06.30 with no way to update. I assume my provider controlls the firmware.
  4. I checked the ports, they are open as suggested (LAN to WAN firewall settings).

But still - it did work before.

I also tried to find a way to turn off the mentioned Software Packet Acceleration in FritzOS, which seemed to be the answer in a similar case (Android app can't connect to roon core since avm router update to FRITZ OS7), but I could not find any control alike. My guess is, that my old FritzOS and/or my provider does not want it be turned on/off.

Do you have any more ideas?

Thank you,
Alex