DataTalk allows running MQTT broker on the local host. Enable the MQTT Broker, and the server will then automatically start.

To use certificates, you have to generate your own certificates and provide them to the server; the server is not capable of generating its own certificates.

If want to make any changes to security – changing username / password you have to either restart whole DataTalk runtime, or just enable / disable the MQTT broker option which will restart the server and new rules will be applied

MQTT Broker runs at port: 1883