How should network be configured to allow physical device to connect to IoT Hub?

Question

Hello all,

I have a physical device which is attempting to connect to IoT Hub using MQTTS protocol (port 8883). I am working within a corporate network environment, so I cannot have port 8883 left open. IT department is asking for source and destination IP addresses to allow a connection from the device to IoT Hub. I am able to set a static IP address for the device I am setting up, but I am unsure if I have given IT the proper information for my IoT Hub. I thought that according to Microsoft documentation
the destination should be set in the format myhub.azure-devices.net. I relayed this information to IT, and they claim to have done this, but I still have not had any luck with connecting the device to my IoT Hub. Is there something I am missing here? Does the port have to be left completely open? Any thoughts or advice is greatly appreciated.

Answer 1

Hi @Hoback, Jacob ,
Is the IT department enabling Outbound rules for the Azure IoT hub hostname (myhub.azure-devices.net) on port 8883 ? You can also try setting the IP Address from IoT Hub instead - using the service tags JSON file.

For example, these are current IP addresses for WestEurope

"name": "AzureIoTHub.WestEurope",  
      "id": "AzureIoTHub.WestEurope",  
      "properties": {  
        "changeNumber": 1,  
        "region": "westeurope",  
        "regionId": 18,  
        "platform": "Azure",  
        "systemService": "AzureIoTHub",  
        "addressPrefixes": [  
          "13.69.71.0/25",  
          "13.69.109.0/25",  
          "13.95.15.251/32",  
          "23.100.4.253/32",  
          "23.100.8.130/32",  
          "40.113.153.50/32",  
          "40.113.176.160/27",  
          "40.113.176.192/27",  
          "40.113.177.0/24",  
          "40.118.27.192/32",  
          "51.144.118.31/32",  
          "52.236.189.128/25",  
          "2603:1020:206:402::300/123",  
          "2603:1020:206:802::240/123",  
          "2603:1020:206:c02::240/123"  
        ],