azure-web-application-firewall
Expert knowledge for Azure Web Application Firewall development including best practices, decision making, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when configuring Front Door/App Gateway WAF rules, geo/bot filters, rate limits, Sentinel logging,
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SKILL.md
Azure Web Application Firewall Skill
This skill provides expert guidance for Azure Web Application Firewall. Covers best practices, decision making, 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), useread_filewith the specified lines. For categories with file links (e.g.,[security.md](security.md)), useread_fileon the linked reference file
IMPORTANT for Agent: If
metadata.generated_atis more than 3 months old, suggest the user pull the latest version from the repository. Ifmcp_microsoftdocstools 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_fetchwith query stringfrom=learn-agent-skill. Returns Markdown. - Fallback: Use
fetch_webpagewith query stringfrom=learn-agent-skill&accept=text/markdown. Returns Markdown.
Category Index
| Category | Lines | Description |
|---|---|---|
| Best Practices | L35-L42 | Best practices for configuring and tuning WAF on Azure Front Door and Application Gateway, including rule tuning, reducing false positives, and using geomatch rules for stronger security. |
| Decision Making | L43-L48 | Guidance on planning and migrating from legacy WAF configs to full WAF policies, and managing the lifecycle, upgrades, and versions of Azure WAF managed rule sets. |
| Limits & Quotas | L49-L54 | WAF limits on rules, file sizes, and concurrent requests, plus how to configure request body and upload size thresholds for Application Gateway WAF. |
| Security | L55-L71 | Configuring Azure WAF/Front Door/App Gateway security: IP/geo rules, default/CRS/DRS rule sets, exclusions/exceptions, log scrubbing for sensitive data, governance, and securing Azure OpenAI APIs. |
| Configuration | L72-L101 | Configuring Azure WAF (Front Door & App Gateway): custom/managed rules, geo/ASN/bot/JA4 filters, rate limiting, exclusions, logging/metrics, custom responses, policy settings, and central management. |
| Integrations & Coding Patterns | L102-L111 | Using WAF with other Azure services: integrating logs with Sentinel/Log Analytics, automating incident response, investigating events, and protecting APIM/Azure OpenAI via Front Door WAF. |
| Deployment | L112-L117 | How to deploy and manage Application Gateway WAF v2 using Bicep, ARM templates, Terraform, and upgrade existing WAF configurations to WAF policies. |
Best Practices
| Topic | URL |
|---|---|
| Implement WAF best practices in Azure Front Door | https://learn.microsoft.com/en-us/azure/web-application-firewall/afds/waf-front-door-best-practices |
| Tune Azure Front Door WAF rules and reduce false positives | https://learn.microsoft.com/en-us/azure/web-application-firewall/afds/waf-front-door-tuning |
| Apply best practices for WAF on Application Gateway | https://learn.microsoft.com/en-us/azure/web-application-firewall/ag/best-practices |
| Apply geomatch WAF rules to strengthen web app security | https://learn.microsoft.com/en-us/azure/web-application-firewall/geomatch-custom-rules-examples |
Decision Making
| Topic | URL |
|---|---|
| Migrate Azure Application Gateway WAF configs to full policies | https://learn.microsoft.com/en-us/azure/web-application-firewall/ag/migrate-policy |
| Plan Azure WAF managed ruleset lifecycle and upgrades | https://learn.microsoft.com/en-us/azure/web-application-firewall/ruleset-support-policy |
Limits & Quotas
| Topic | URL |
|---|---|
| Understand Azure WAF on Application Gateway limits | https://learn.microsoft.com/en-us/azure/web-application-firewall/ag/application-gateway-waf-faq |
| Configure WAF request and upload size limits | https://learn.microsoft.com/en-us/azure/web-application-firewall/ag/application-gateway-waf-request-size-limits |
Security
Configuration
Integrations & Coding Patterns
| Topic | URL |
|---|---|
| Automate WAF incident response with Microsoft Sentinel | https://learn.microsoft.com/en-us/azure/web-application-firewall/afds/automated-detection-response-with-sentinel |
| Protect APIM-hosted APIs with Front Door WAF | https://learn.microsoft.com/en-us/azure/web-application-firewall/afds/protect-api-hosted-apim-by-waf |
| Analyze Application Gateway WAF logs with Log Analytics | https://learn.microsoft.com/en-us/azure/web-application-firewall/ag/log-analytics |
| Investigate Azure WAF events with Security Copilot | https://learn.microsoft.com/en-us/azure/web-application-firewall/waf-copilot |
| Detect new web threats using WAF and Sentinel | https://learn.microsoft.com/en-us/azure/web-application-firewall/waf-new-threat-detection |
| Integrate Azure WAF logs with Microsoft Sentinel | https://learn.microsoft.com/en-us/azure/web-application-firewall/waf-sentinel |
Deployment
| Topic | URL |
|---|---|
| Deploy Azure Application Gateway WAF v2 using Bicep | https://learn.microsoft.com/en-us/azure/web-application-firewall/ag/quick-create-bicep |
| Deploy Azure Application Gateway WAF v2 via ARM template | https://learn.microsoft.com/en-us/azure/web-application-firewall/ag/quick-create-template |
| Upgrade Azure Application Gateway WAF configuration to policy | https://learn.microsoft.com/en-us/azure/web-application-firewall/ag/upgrade-ag-waf-policy |
Files
1- SKILL.md
b1d31392f512.4 KB
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