Since I wanted to know more about using cleint certificates I searched further and found this helpful explanation http://www.steves-internet-guide.com/creating-and-using-client-certificates-with-mqtt-and-mosquitto/ For Mosquitto on the ctrlX this would mean: Get the MQTT CA certificate and coresponding private key ( currently we delete this key after generating the CA certificate 😉) Generate on a PC with open_SSL a private key for the client Generate with open _SSl een Certificate Signing request for this client private key Sign this with the CA certificate and CA pravate key Add the generated signed certificate and client private key to the MQTT client Configure mosquitto to use client authentication i.s.o. user/pass or both For the record, I see I am a new member now but still the same Marc Smaak as from the reply's above 😉
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