Extcap module for Wireshark that allows you to run a remote capture from a FRITZ!Box router.
Read the extcap folder path from "About Wireshark" -> "Folders" -> "Extap path", then execute the commands below:
git clone https://github.com/cardigliano/wireshark-fritzbox.git
cd wireshark-fritzbox
cp fritzcap.sh <extcap folder>
Restart Wireshark and you should be ready to go.
It is also possible to run a remote capture from command line with tshark using the fritzdump.sh script. Example:
./fritzdump.sh 192.168.178.1
Enter Router Password: