Onboard OT sensors to Defender for IoT

This article describes how to onboard sensors with Defender for IoT in the Azure portal.

Purchase sensors or download software for sensors

This procedure describes how to use the Azure portal to contact vendors for pre-configured appliances, or how to download software for you to install on your own appliances.

  1. In the Azure portal, go to Defender for IoT > Getting started > Sensor.

  2. Do one of the following steps:

    • To buy a pre-configured appliance, select Contact under Buy preconfigured appliance.

      This link opens an email to hardware.sales@arrow.comwith a template request for Defender for IoT appliances. For more information, see Pre-configured physical appliances for OT monitoring.

    • To install software on your own appliances, do the following:

      1. Make sure that you have a supported appliance available. For more information, see Which appliances do I need?.

      2. Under Select version, select the software version you want to install. We recommend that you always select the most recent version.

      3. Select Download. Download the sensor software and save it in a location that you can access from your selected appliance.

        All files downloaded from the Azure portal are signed by root of trust so that your machines use signed assets only.

      4. Install your software. For more information, see Defender for IoT installation.

Onboard OT sensors

Onboard an OT sensor by registering it with Microsoft Defender for IoT and downloading a sensor activation file.


Enterprise IoT sensors also require onboarding and activation, with slightly different steps. For more information, see Enhance IoT security monitoring with an Enterprise IoT network sensor (Public preview).

Prerequisites: Make sure that you've set up your sensor and configured your SPAN port or TAP. For more information, see Traffic mirroring methods for OT monitoring.

To onboard your sensor to Defender for IoT:

  1. In the Azure portal, navigate to Defender for IoT > Getting started and select Set up OT/ICS Security. Alternately, from the Defender for IoT Sites and sensors page, select Onboard OT sensor.

  2. By default, on the Set up OT/ICS Security page, Step 1: Did you set up a sensor? and Step 2: Configure SPAN port or TAP​ of the wizard are collapsed. If you haven't completed these steps, do so before continuing.

  3. In Step 3: Register this sensor with Microsoft Defender for IoT enter or select the following values for your sensor:

    1. In the Sensor name field, enter a meaningful name for your sensor. We recommend including your sensor's IP address as part of the name, or using another easily identifiable name, to help you keep track between the registration name in the Azure portal and the IP address of the sensor shown in the sensor console.

    2. In the Subscription field, select your Azure subscription.

    3. Toggle on the Cloud connected option to have your sensor connected to other Azure services, such as Microsoft Sentinel, and to push threat intelligence packages from Defender for IoT to your sensors.

    4. In the Sensor version field, select which software version is installed on your sensor machine. We recommend that you select 22.X and above to get all of the latest features and enhancements.

      If you haven't yet upgraded to version 22.x, see Update Defender for IoT OT monitoring software.

    5. In the Site section, select the Resource name and enter the Display name for your site. Add any tags as needed to help you identify your sensor.

    6. In the Zone field, select a zone from the menu, or select Create Zone to create a new one.

  4. Select Register.

A success message appears and your activation file is automatically downloaded, and your sensor is now shown under the configured site on the Defender for IoT Sites and sensors page.

However, until you activate your sensor, the sensor's status will show as Pending Activation.

Make the downloaded activation file accessible to the sensor console admin so that they can activate the sensor. For more information, see Upload new activation files.

All files downloaded from the Azure portal are signed by root of trust so that your machines use signed assets only.

Next steps