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Azure

Azure Firewall

Protect your Azure Virtual Network resources with cloud-native network security.

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Read the Microsoft Copilot for Azure Firewall announcement blog, launched at RSA 2024

Firewall security to help protect your digital assets

Azure Firewall is a managed, cloud-based network security service that protects your Azure Virtual Network resources. The stateful firewall service has built-in high availability and unrestricted cloud scalability to help you create, enforce, and log application and network connectivity policies across subscriptions and virtual networks.

Unified management

Centrally manage security across all virtual networks with a common set of network and application rules.

Strengthen your network security posture

Get advanced threat protection that meets the needs of highly sensitive and regulated environments. Azure Firewall taps into real-time security signals from a wide range of sources using Microsoft threat intelligence to guard against evolving threats and zero-day vulnerabilities.

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Deploy a stateful firewall in minutes

Enable turnkey firewall security capabilities in Azure Virtual Network to control and log access to apps and resources. Azure Firewall supports filtering for both inbound and outbound traffic, internal spoke-to-spoke connections, and hybrid connections through Azure VPN and ExpressRoute gateways.

Prevent malware and viruses from spreading

Azure Firewall decrypts outbound traffic, performs required security checks, and then encrypts the traffic to the destination. It works in conjunction with URL filtering and web categories by letting administrators allow or deny user access to website categories such as gambling or social media.

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Inspect traffic in real time

The intrusion detection and prevention system (IDPS) capability uses signatures to continuously monitor activities, generate alerts, log information, and optionally attempt to block the attack. It can detect attacks in all ports and protocols for non-encrypted traffic. Encrypted traffic utilizes the TLS inspection capability for decryption.

Comprehensive security and compliance, built in

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Azure Firewall resources and documentation

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Frequently asked questions about Azure Firewall

  • Set up Azure Firewall in the Azure portal or with PowerShell, REST API, or templates. Read a Tutorial: Monitor Azure Firewall logs.

  • Yes, Azure Firewall Premium provides advanced threat protection that meets the needs of highly sensitive and regulated environments, such as the financial services and healthcare industries. A signature-based IDPS looks for specific patterns to rapidly detect attacks. These patterns can include byte sequences in network traffic or known malicious instruction sequences used by malware. There are more than 58,000 signatures in more than 50 categories which are updated in real time to protect against new and emerging exploits. The exploit categories include malware, phishing, coin mining, and Trojan attacks.

  • Yes, Azure Firewall allows you to inspect traffic destined for a private endpoint. Private endpoints enable Azure resources deployed in a virtual network to communicate privately with private link resources. You may need to inspect or block traffic from clients to the services exposed via private endpoints using Azure Firewall.

  • For secure access to platform services, we recommend service endpoints. You can choose to enable service endpoints in the Azure Firewall subnet and disable them on the connected spoke virtual networks. This way you benefit from both features—service endpoint security and central logging for all traffic.