Ports used with Device Update for IoT Hub
Device Update for IoT Hub uses a variety of network ports for different purposes.
|Download from networks/CDNs||80 (HTTP protocol)|
|Download from MCC/CDNs||80 (HTTP protocol)|
|Device Update agent connection to IoT Hub||8883 (MQTT protocol)|
Use IoT Hub supported protocols
The Device Update agent can be modified to use any of the supported Azure IoT Hub protocols.
For more information, see Choose a device communication protocol.