I have the problem that I send protobuf messages via MQTT, which I want to sniff with the help of Wireshark. I have already found out that there is a "Message Decoding" function that could help me with this. I have already tried to find a solution using "Decode as" and a dissector.
Now my question: What do I have to set in the individual columns so that I can decode my Protobuf messages from the MQTT protocol. What does "match criteria", "topic pattern", "decoding", "payload protocol" stand for?