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Design and implement Azure Firewall. In this lesson we examine Azure Firewall — a cloud-native, stateful firewall-as-a-service that protects resources within Azure Virtual Networks. This module emphasizes practical configuration and architectural integration so you can deploy Azure Firewall as a centralized security control in cloud networks.
Learning objectiveWhat you’ll learnReference
Understand core capabilitiesStateful traffic inspection, built‑in high availability, scalability, logging/monitoring, and integrations with Azure servicesAzure Firewall overview
Rule processing (NAT, network, application)How Azure Firewall evaluates and applies NAT rules, network rules, and application rules to control traffic flowRule overview
Deployment and configurationStep‑by‑step setup from the Azure portal, recommended settings, and operational best practicesAzure portal
Hub-and-spoke integrationUsing Azure Firewall as a central security point in a hub-and-spoke topology, routing and UDR considerations, and traffic inspection patternsHub-and-spoke architecture
A presentation slide titled "Learning Objectives" showing four numbered goals about Azure Firewall. The objectives cover its key capabilities (stateful inspection, high availability, Azure integration), how it handles NAT/network/application rules, setup via the Azure portal, and using it as a central security point in a hub-and-spoke design.
Before you begin, ensure familiarity with Azure Virtual Network fundamentals, route tables (UDRs), and basic Azure role-based access control (RBAC). These topics ease deployment and troubleshooting when you configure Azure Firewall rules and routing.
In the sections that follow we will:
  • Introduce core Azure Firewall concepts and capabilities, including high availability and telemetry.
  • Step through rule processing order and examples for NAT rules, network rules, and application rules.
  • Demonstrate a common hub-and-spoke deployment pattern with configuration examples, routing considerations, and traffic-flow diagrams to reinforce the concepts.

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