Azure Defender For Iot Skill

This skill provides expert guidance for Azure Defender For Iot. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.

How to Use This Skill

IMPORTANT for Agent: Use the Category Index below to locate relevant sections. For categories with line ranges (e.g., L35-L120), use read_file with the specified lines. For categories with file links (e.g., [security.md](security.md)), use read_file on the linked reference file

IMPORTANT for Agent: If metadata.generated_at is more than 3 months old, suggest the user pull the latest version from the repository. If mcp_microsoftdocs tools are not available, suggest the user install it: Installation Guide

This skill requires network access to fetch documentation content:

• Preferred: Use mcp_microsoftdocs:microsoft_docs_fetch with query string from=learn-agent-skill. Returns Markdown.
• Fallback: Use fetch_webpage with query string from=learn-agent-skill&accept=text/markdown. Returns Markdown.

Category Index

Category	Lines	Description
Troubleshooting	L37-L46	Diagnosing and resolving Defender for IoT issues: CIS benchmark findings, micro agent problems, OT sensor installation/health, and understanding alert types and sensor health messages.
Best Practices	L47-L54	Designing OT monitoring architectures, placing sensors, tuning OT alert workflows, and investigating OT controller/programming changes with Defender for IoT
Decision Making	L55-L67	Guidance for planning and choosing Defender for IoT deployment options: OT traffic mirroring methods, appliance selection, licensing/billing, micro agent and console retirement, and version/support tracking.
Architecture & Design Patterns	L68-L74	OT network architectures for connecting sensors to Azure, sample connectivity models, and mapping Defender for IoT components to Purdue OT network layers.
Limits & Quotas	L75-L85	Data residency, retention limits, networking/port requirements, supported OT/virtual appliances, and version/feature lifecycle details for Defender for IoT deployments.
Security	L86-L105	Security alerts, recommendations, roles, RBAC, SSO, certificates, and sensor auth for securing Defender for IoT hubs, OT sensors, and monitoring OT networks with Zero Trust.
Configuration	L106-L134	Configuring Defender for IoT micro agents and OT sensors, including installation, tuning, dependencies, alerting, monitoring, metadata import, networking, proxies, firewalls, and integrations.
Integrations & Coding Patterns	L135-L165	Integrating Defender for IoT with APIs, SIEM/SOAR, firewalls, OT tools, and configuring traffic mirroring and scripts for alert, inventory, and vulnerability data handling.
Deployment	L166-L192	Deploying and managing Defender for IoT sensors and micro agents, including hardware/VM appliance setup, traffic mirroring, upgrades, backups, region moves, and hybrid/air-gapped deployments.

Troubleshooting

Topic	URL
Investigate CIS benchmark findings in Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-investigate-cis-benchmark
Troubleshoot Defender for IoT micro agent issues	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/troubleshoot-defender-micro-agent
Reference Microsoft Defender for IoT alert types	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/alert-engine-messages
Troubleshoot Microsoft Defender for IoT OT sensors	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-troubleshoot-sensor
Validate Defender for IoT OT sensor software installation	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/post-install-validation-ot-software
Interpret Defender for IoT sensor health messages	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/sensor-health-messages

Best Practices

Topic	URL
Plan OT monitoring architecture with Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/plan-corporate-monitoring
Prepare OT sites and sensor placement for Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/plan-prepare-deploy
Optimize Defender for IoT OT alert workflows	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-accelerate-alert-incident-response
Investigate OT programming changes with Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-analyze-programming-details-changes

Decision Making

Topic	URL
Choose OT traffic mirroring methods for Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/traffic-mirroring-methods
Decide between SPAN, RSPAN, ERSPAN for OT mirroring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/traffic-mirroring-methods
Plan Defender for IoT billing and site licensing	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/billing
Choose and manage Defender for IoT licenses	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/license-and-trial-license-extention
Determine Defender for IoT EIoT licensing needs	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/manage-subscriptions-enterprise
Select appropriate OT appliances for Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-appliance-sizing
Plan for Defender for IoT on-premises console retirement	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/on-premises-management-console-retirement
Plan transition from on-premises to cloud Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/transition-on-premises-management-console-to-cloud
Track Defender for IoT OT software versions and support	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/release-notes

Architecture & Design Patterns

Topic	URL
Select architectures to connect OT sensors to Azure	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/architecture-connections
Use sample OT network connectivity models for sensors	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/sample-connectivity-models
Map Defender for IoT to Purdue OT network layers	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/understand-network-architecture

Limits & Quotas

Topic	URL
Understand Defender for IoT data residency mapping	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-data-processing
Review Defender for IoT micro agent feature lifecycle	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/edge-security-module-deprecation
Networking requirements and ports for Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/networking-requirements
Review catalog of preconfigured OT monitoring appliances	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-pre-configured-appliances
Check system requirements for virtual OT appliances	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-virtual-appliances
Understand Defender for IoT data retention limits	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/references-data-retention
Review archived Defender for IoT OT sensor versions	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/release-notes-ot-monitoring-sensor-archive

Security

Topic	URL
Use Defender micro agent built-in security alerts	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-agent-based-security-alerts
Define custom Defender for IoT Hub alerts	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-customizable-security-alerts
Apply Defender for IoT Hub security recommendations	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-recommendations
Use Defender for IoT Hub built-in alerts	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-security-alerts
Use ThreadX micro agent alerts and recommendations	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-threadx-security-alerts-recommendations
Call Defender for IoT sensor authentication APIs	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/api/sensor-auth-apis
Meet SSL/TLS certificate requirements for OT sensors	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/certificate-requirements
Manage Defender for IoT users and roles	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/manage-users-overview
Configure Azure user permissions for Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/manage-users-portal
Configure and manage OT sensor user access	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/manage-users-sensor
Apply Zero Trust monitoring to OT networks with Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/monitor-zero-trust
Create CA-signed SSL/TLS certificates for OT sensors	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/create-ssl-certificates
Map Azure RBAC roles to Defender for IoT actions	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/roles-azure
Configure on-premises Defender for IoT user roles	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/roles-on-premises
Set up Entra ID SSO for IoT sensor console	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/set-up-sso
Audit Defender for IoT user activity and access	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/track-user-activity

Configuration

Topic	URL
Configure Defender for IoT micro agent behavior	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-micro-agent-configuration
Review Linux OS dependencies for Defender micro agent	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-micro-agent-linux-dependencies
Configure PAM to audit device sign-in events	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/configure-pam-to-audit-sign-in-events
Configure Defender for IoT DMI decoder on devices	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-configure-dmi-decoder
Configure Defender IoT micro agent twin properties	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-configure-micro-agent-twin
Install and authenticate Defender IoT micro agent on Edge	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-install-micro-agent-for-edge
Tune Defender IoT micro agent for Eclipse ThreadX	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-threadx-security-module
Create and assign custom Defender IoT alerts	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/quickstart-create-custom-alerts
Use Defender for IoT OT sensor CLI commands	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/cli-ot-sensor
Set up active monitoring methods for OT networks	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/configure-active-monitoring
Configure reverse DNS lookup in Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/configure-reverse-dns-lookup
Bulk-manage OT sensor settings via Azure portal	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/configure-sensor-settings-portal
Configure Windows Endpoint Monitoring for OT sensors	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/configure-windows-endpoint-monitoring
Configure Defender for IoT OT sensor proxy settings	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/connect-sensors
Configure local script to enrich Windows endpoint data	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/detect-windows-endpoints-script
Enable enterprise IoT security in Defender for Endpoint	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/eiot-defender-for-endpoint
Configure OT plans and sensors in Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/getting-started
Configure OT alert forwarding to external systems	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-forward-alert-information-to-partners
Import and map OT device metadata into Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-import-device-information
Maintain and configure OT network sensors via GUI	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-manage-individual-sensors
Configure SNMP MIB health monitoring for OT sensors	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-set-up-snmp-mib-monitoring
Manage threat intelligence packages on OT sensors	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-work-with-threat-intelligence-packages
Onboard OT sensors to Defender for IoT in Azure	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/onboard-sensors
Configure and activate Microsoft Defender for IoT OT sensors	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/activate-deploy-sensor
Configure firewall endpoints for Defender for IoT OT sensors	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/provision-cloud-management

Integrations & Coding Patterns

Topic	URL
Use Defender micro agent API for Eclipse ThreadX	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/threadx-security-module-api
Manage OT sensor alerts using Defender for IoT APIs	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/api/sensor-alert-apis
Manage OT sensor inventory via Defender for IoT APIs	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/api/sensor-inventory-apis
Access OT vulnerability data via Defender for IoT APIs	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/api/sensor-vulnerability-apis
Automate OT sensor disconnection alerts with Sentinel playbooks	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/automate-sensor-disconnection-alerts
Choose and configure Defender for IoT partner integrations	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrate-overview
Integrate ArcSight with Defender for IoT alert forwarding	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/arcsight
Send Defender for IoT alerts to LogRhythm SIEM	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/logrhythm
Integrate RSA NetWitness with Defender for IoT alerts	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/netwitness
Connect OT Defender for IoT sensors to Microsoft Sentinel (legacy)	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/on-premises-sentinel
Stream Defender for IoT cloud alerts to third-party SIEMs	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/send-cloud-data-to-partners
Configure legacy ServiceNow integration for Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/service-now-legacy
Use Sentinel solution to investigate Defender for IoT threats	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/iot-advanced-threat-monitoring
Connect Defender for IoT with Microsoft Sentinel via data connector	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/iot-solution
Integrate with Microsoft Defender for IoT REST APIs	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/references-work-with-defender-for-iot-apis
Configure Cisco ERSPAN for Defender for IoT sensors	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/configure-mirror-erspan
Use ESXi vSwitch promiscuous mode for OT traffic mirroring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/configure-mirror-esxi
Use Hyper-V vSwitch promiscuous mode for OT mirroring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/configure-mirror-hyper-v
Configure Cisco RSPAN mirroring for OT monitoring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/configure-mirror-rspan
Configure Cisco SPAN ports for Defender for IoT traffic mirroring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/configure-mirror-span
Integrate CyberArk with Defender for IoT for credential security	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-cyberark
Integrate Forescout with Defender for IoT for OT visibility	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-forescout
Integrate Fortinet firewalls with Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-fortinet
Integrate Palo Alto firewalls with Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-palo-alto
Integrate IBM QRadar with Defender for IoT alerts	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-qradar
Integrate ServiceNow Operational Technology Manager with Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-servicenow
Integrate Defender for IoT OT data with Splunk	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-splunk

Deployment

Topic	URL
Provision Defender IoT micro agent via DPS with X.509	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-provision-micro-agent
Move Defender for IoT iotSecuritySolutions resource across regions	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-region-move
Upgrade Defender for IoT micro agent on Linux devices	https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/upgrade-micro-agent
Select and use OT monitoring appliances for Defender for IoT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/
Deploy Dell PowerEdge R350 for OT sensor monitoring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/dell-poweredge-r350-e1800
Deploy Dell PowerEdge R360 for OT sensor monitoring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/dell-poweredge-r360-e1800
Deploy Dell PowerEdge R660 for OT sensor monitoring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/dell-poweredge-r660
Deploy Heptagon YB3x appliance for OT monitoring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/heptagon-yb3x
Use HPE ProLiant DL20 Gen 11 (4SFF) for OT monitoring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl20-gen-11
Use HPE ProLiant DL20 Gen 11 (2LFF) for OT monitoring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl20-gen-11-nhp-2lff
Use legacy HPE ProLiant DL20 for enterprise OT monitoring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl20-legacy
Use HPE ProLiant DL20 Gen10 Plus for enterprise OT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl20-plus-enterprise
Use HPE ProLiant DL20 Gen10 Plus (2LFF) for SMB OT	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl20-plus-smb
Deploy Defender for IoT on HPE ProLiant DL360	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl360
Deploy Defender for IoT on HPE ProLiant DL360 Gen 11	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl360-gen11
Deploy Defender for IoT OT sensor VM on Hyper-V Gen 2	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/virtual-sensor-hyper-v
Deploy Defender for IoT OT sensor VM on VMware ESXi	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/virtual-sensor-vmware
Deploy YS-techsystems YS-FIT2 for OT monitoring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/ys-techsystems-ys-fit2
Back up and restore Defender for IoT OT sensors	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/back-up-restore-sensor
Plan hybrid or air-gapped Defender for IoT deployments	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/air-gapped-deploy
Install and initially configure Defender for IoT OT sensor software	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/install-software-ot-sensor
Deploy Defender for IoT for OT monitoring environments	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/ot-deploy-path
Deploy Defender for IoT OT sensor traffic mirroring	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/set-up-traffic-mirroring
Update Defender for IoT OT sensor software versions	https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/update-ot-software