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Preview•Apr 28, 2026

Public Preview: Microsoft HTTP DDoS Ruleset for Azure WAF on Azure Front Door Premium

Azure Web Application FirewallAzure · Networking

Announcing the public preview of the HTTP DDoS Ruleset on Azure Front Door Premium.

HTTP-layer DDoS attacks remain a leading cause of application downtime, and traditional static controls often fall short against evolving botnets. The new HTTP DDoS Ruleset for Azure WAF introduces automated, adaptive Layer 7 protection that learns, detects, and defends with minimal configuration. Once assigned, the ruleset continuously baselines normal traffic for each Azure Front Door Profile and, when attack surges are detected, selectively blocks offending clients with no emergency tuning required.

The HTTP DDoS Ruleset features:

  • Automated learning of traffic baselines at both the profile and per-client level.
  • Dynamic thresholds and sensitivity settings to balance protection and user experience.
  • Two core rules: one for high-rate client anomalies and one for suspected bots, leveraging Microsoft Threat Intelligence.

Learn more.

Read the original announcement↗

More from Azure Web Application Firewall

All Azure Web Application Firewall updates →

  1. Generally Available: Exceptions in WAF for Azure Application Gateway and Azure Front Door

    Announcing the general availability of exceptions for Web Application Firewall on Azure Application Gateway and Azure Front Door.

    Azure Web Application Firewall•Generally available•Oct 8, 2026

  2. Public Preview: IPv6 Support for Application Gateway WAF

    Announcing the Public Preview of IPv6 support for Application Gateway WAF.

    Azure Web Application Firewall•Preview•Oct 5, 2026

  3. Public Preview: Azure Front Door profile and route level WAF policies

    Azure Front Door’s Web Application Firewall (WAF) now supports profile and route level WAF policy associations in public preview.

    Azure Web Application Firewall•Preview•Sep 2, 2026

  4. Generally Available: Custom block response code and body for Application Gateway WAF

    Announcing the General Availability of custom block response code and body for WAF integrated with Application Gateway

    Azure Web Application Firewall•Generally available•Aug 24, 2026

  5. Public Preview: Exceptions in WAF for Azure Application Gateway and Azure Front Door

    Azure Web Application Firewall (WAF) helps protect your web applications from common threats and attacks. In some cases, WAF may block requests that are safe and expected for your application.

    Azure Web Application Firewall•Preview•Jul 7, 2026