MSDN | Microsoft Docs

Azure Firewall

Secure, cloud-native network security service that protects your virtual network resources.

Overview

Azure Firewall is a managed, cloud-native network security service that protects your Azure Virtual Network resources. It's a fully stateful firewall as a service with built-in high availability and unrestricted cloud scalability.

Azure Firewall allows you to control traffic flow between Azure subnetworks and between Azure and the internet. It provides robust protection against threats like malware, malicious websites, and unauthorized access.

Key Features

  • Built-in High Availability and Scalability: Azure Firewall is a highly available and scalable service that requires no extra configuration.
  • Stateful Firewall as a Service: It provides advanced threat protection and Network Address Translation (NAT) capabilities.
  • Network and Application Rule Processing: Filter traffic based on source and destination IP addresses, ports, and protocols (network rules) or by FQDNs (application rules).
  • Threat Intelligence-Based Filtering: Automatically block traffic to and from known malicious IP addresses and domains.
  • Centralized Logging and Monitoring: Integrate with Azure Monitor for comprehensive logging and analysis of firewall activity.
  • Hub-and-Spoke Network Topology: Deploy Azure Firewall in a central hub network to protect workloads in spokes.
  • Azure Firewall Manager: Manage and govern firewall policies across multiple Azure Firewall instances and Azure Virtual WAN hubs.

Use Cases

  • Protecting workloads deployed in a hub-and-spoke architecture.
  • Securing traffic to and from the internet.
  • Centralizing network security policies.
  • Enforcing granular access control to Azure resources.

Getting Started

You can deploy Azure Firewall using the Azure portal, Azure PowerShell, Azure CLI, or ARM templates. The deployment process involves creating a firewall resource, configuring network rules and application rules, and routing traffic through the firewall.

To learn more about configuring and managing Azure Firewall, refer to the following resources:

Explore Azure Firewall Now