1---2name: azure-firewall3description: Expert knowledge for Azure Firewall development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when designing Azure Firewall SKUs, policies/rules, TLS inspection, DNAT/SNAT, logging/Sentinel, or hub‑and‑spoke, and other Azure Firewall related development tasks. Not for Azure Firewall Manager (use azure-firewall-manager), Azure Virtual Network (use azure-virtual-network), Azure Virtual Network Manager (use azure-virtual-network-manager), Azure Web Application Firewall (use azure-web-application-firewall).4---5# Azure Firewall Skill67This skill provides expert guidance for Azure Firewall. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.89## How to Use This Skill1011> **IMPORTANT for Agent**: Use the **Category Index** below to locate relevant sections. For categories with line ranges (e.g., `L35-L120`), use `read_file` with the specified lines. For categories with file links (e.g., `[security.md](security.md)`), use `read_file` on the linked reference file1213This skill requires **network access** to fetch documentation content:14- **Preferred**: Use `mcp_microsoftdocs:microsoft_docs_fetch`. Returns Markdown.15- **Fallback**: Use `WebFetch`. Returns Markdown.1617## Category Index1819| Category | Lines | Description |20|----------|-------|-------------|21| Troubleshooting | L33-L38 | Diagnosing Azure Firewall issues using known limitations, packet captures, and Sentinel log analysis for malware detection and traffic investigation. |22| Best Practices | L39-L46 | Best practices for Azure Firewall DNS proxy/caching, rule and SNAT tuning, using Policy Analytics to refine rules, and hardening firewall security and configuration |23| Decision Making | L47-L55 | Guidance on choosing Azure Firewall SKUs (Basic/Standard/Premium), comparing features and performance, and planning or changing deployments based on throughput and requirements. |24| Architecture & Design Patterns | L56-L68 | Designing Azure Firewall network architectures: hub-and-spoke, forced tunneling, load balancer integration, hybrid/AVD/M365 protection, and DNAT for overlapping/private IP networks. |25| Limits & Quotas | L69-L78 | Azure Firewall capacity, IP and SNAT port limits, prescaling options, TCP idle timeouts, and how to scale/extend outbound connectivity (including via NAT Gateway V2). |26| Security | L79-L92 | Azure Firewall security setup: compliance, RBAC/permissions, Azure Policy, TLS inspection and CA chains, threat intel, DNAT, AKS and hybrid network protection, and portal deployment. |27| Configuration | L93-L115 | Configuring Azure Firewall policies, rules (DNAT/SNAT/app), IP groups, DNS/proxy, Premium features, logging/monitoring, automation via PowerShell, and tracking rule changes. |28| Integrations & Coding Patterns | L116-L120 | Configuring Azure Firewall to securely access Azure Storage via SFTP, including required rules, network paths, and integration patterns for SFTP traffic. |29| Deployment | L121-L128 | How to deploy Azure Firewall (including Premium) with IP Groups using Bicep/ARM/Terraform, and integrate with Azure DDoS Protection, including basic configuration steps |3031### Troubleshooting32| Topic | URL |33|-------|-----|34| Detect and investigate malware using Sentinel with Azure Firewall logs | https://learn.microsoft.com/en-us/azure/firewall/detect-malware-with-sentinel |35| Troubleshoot Azure Firewall using packet capture | https://learn.microsoft.com/en-us/azure/firewall/packet-capture |3637### Best Practices38| Topic | URL |39|-------|-----|40| Understand Azure Firewall DNS proxy behavior and caching | https://learn.microsoft.com/en-us/azure/firewall/dns-details |41| Optimize Azure Firewall performance with rule and SNAT tuning | https://learn.microsoft.com/en-us/azure/firewall/firewall-best-practices |42| Optimize Azure Firewall rules with Policy Analytics | https://learn.microsoft.com/en-us/azure/firewall/policy-analytics |43| Apply security best practices to Azure Firewall | https://learn.microsoft.com/en-us/azure/firewall/secure-firewall |4445### Decision Making46| Topic | URL |47|-------|-----|48| Choose and change Azure Firewall Standard vs Premium SKU | https://learn.microsoft.com/en-us/azure/firewall/change-sku |49| Select the appropriate Azure Firewall SKU | https://learn.microsoft.com/en-us/azure/firewall/choose-firewall-sku |50| Deploy Azure Firewall Basic with portal and policy | https://learn.microsoft.com/en-us/azure/firewall/deploy-firewall-basic-portal-policy |51| Compare Azure Firewall features across SKUs | https://learn.microsoft.com/en-us/azure/firewall/features-by-sku |52| Plan Azure Firewall performance and SKU throughput | https://learn.microsoft.com/en-us/azure/firewall/firewall-performance |5354### Architecture & Design Patterns55| Topic | URL |56|-------|-----|57| Architect multi-hub and spoke routing with Azure Firewall | https://learn.microsoft.com/en-us/azure/firewall/firewall-multi-hub-spoke |58| Design Azure Firewall forced tunneling architectures | https://learn.microsoft.com/en-us/azure/firewall/forced-tunneling |59| Integrate Azure Firewall with Standard Load Balancer | https://learn.microsoft.com/en-us/azure/firewall/integrate-lb |60| Use Azure Firewall Management NIC for control traffic | https://learn.microsoft.com/en-us/azure/firewall/management-nic |61| Architect Azure Firewall protection for Azure Virtual Desktop | https://learn.microsoft.com/en-us/azure/firewall/protect-azure-virtual-desktop |62| Design Azure Firewall protection for Microsoft 365 traffic | https://learn.microsoft.com/en-us/azure/firewall/protect-office-365 |63| Secure hybrid networks with Azure Firewall and policy | https://learn.microsoft.com/en-us/azure/firewall/tutorial-hybrid-portal-policy |64| Architect Azure Firewall in hybrid network topologies | https://learn.microsoft.com/en-us/azure/firewall/tutorial-hybrid-ps |65| Use private IP DNAT for overlapped Azure networks | https://learn.microsoft.com/en-us/azure/firewall/tutorial-private-ip-dnat |6667### Limits & Quotas68| Topic | URL |69|-------|-----|70| Deploy Azure Firewall with multiple public IPs and limits | https://learn.microsoft.com/en-us/azure/firewall/deploy-multi-public-ip-powershell |71| Azure Firewall FAQ limits, features, and behaviors | https://learn.microsoft.com/en-us/azure/firewall/firewall-faq |72| Scale Azure Firewall SNAT ports and IP limits | https://learn.microsoft.com/en-us/azure/firewall/integrate-with-nat-gateway |73| Integrate Azure Firewall with NAT Gateway V2 for SNAT scaling | https://learn.microsoft.com/en-us/azure/firewall/integrate-with-nat-gateway-v2 |74| Configure Azure Firewall prescaling capacity ranges | https://learn.microsoft.com/en-us/azure/firewall/prescaling |75| Configure Azure Firewall TCP session idle timeouts | https://learn.microsoft.com/en-us/azure/firewall/tcp-session-behavior |7677### Security78| Topic | URL |79|-------|-----|80| Understand Azure Firewall compliance certifications | https://learn.microsoft.com/en-us/azure/firewall/compliance-certifications |81| Enforce Azure Firewall security using Azure Policy | https://learn.microsoft.com/en-us/azure/firewall/firewall-azure-policy |82| Configure TLS inspection certificates for Firewall Premium | https://learn.microsoft.com/en-us/azure/firewall/premium-certificates |83| Deploy Enterprise CA chain for Azure Firewall Premium | https://learn.microsoft.com/en-us/azure/firewall/premium-deploy-certificates-enterprise-ca |84| Protect AKS clusters using Azure Firewall | https://learn.microsoft.com/en-us/azure/firewall/protect-azure-kubernetes-service |85| Azure Firewall roles, permissions, and required access | https://learn.microsoft.com/en-us/azure/firewall/roles-permissions |86| Configure Azure Firewall threat intelligence filtering | https://learn.microsoft.com/en-us/azure/firewall/threat-intel |87| Deploy and configure Azure Firewall in portal | https://learn.microsoft.com/en-us/azure/firewall/tutorial-firewall-deploy-portal |88| Configure Azure Firewall DNAT for inbound filtering | https://learn.microsoft.com/en-us/azure/firewall/tutorial-firewall-dnat |89| Configure Azure Firewall for hybrid network security | https://learn.microsoft.com/en-us/azure/firewall/tutorial-hybrid-portal |9091### Configuration92| Topic | URL |93|-------|-----|94| Create and manage Azure Firewall IP Groups | https://learn.microsoft.com/en-us/azure/firewall/create-ip-group |95| Set customer-controlled maintenance windows for Azure Firewall | https://learn.microsoft.com/en-us/azure/firewall/customer-controlled-maintenance |96| Deploy and configure Azure Firewall policy via PowerShell | https://learn.microsoft.com/en-us/azure/firewall/deploy-ps-policy |97| Bulk manage Azure Firewall rules with PowerShell | https://learn.microsoft.com/en-us/azure/firewall/deploy-rules-powershell |98| Configure and monitor Azure Firewall DNAT rules | https://learn.microsoft.com/en-us/azure/firewall/destination-nat-rules |99| Configure DNS servers and DNS proxy for Azure Firewall | https://learn.microsoft.com/en-us/azure/firewall/dns-settings |100| Use Azure Firewall Policy Draft and Deployment | https://learn.microsoft.com/en-us/azure/firewall/draft-deploy |101| Configure Azure Firewall explicit proxy mode | https://learn.microsoft.com/en-us/azure/firewall/explicit-proxy |102| Analyze Azure Firewall data using workbooks | https://learn.microsoft.com/en-us/azure/firewall/firewall-workbook |103| Use Azure Firewall FQDN tags in application rules | https://learn.microsoft.com/en-us/azure/firewall/fqdn-tags |104| Configure FTP modes and security on Azure Firewall | https://learn.microsoft.com/en-us/azure/firewall/ftp-support |105| Configure and use IP Groups in Azure Firewall rules | https://learn.microsoft.com/en-us/azure/firewall/ip-groups |106| Configure monitoring and logging for Azure Firewall | https://learn.microsoft.com/en-us/azure/firewall/monitor-firewall |107| Use Azure Firewall monitoring logs and metrics reference | https://learn.microsoft.com/en-us/azure/firewall/monitor-firewall-reference |108| Implement Azure Firewall Premium advanced features | https://learn.microsoft.com/en-us/azure/firewall/premium-features |109| Track Azure Firewall rule changes with Resource Graph | https://learn.microsoft.com/en-us/azure/firewall/rule-set-change-tracking |110| Configure SNAT private IP ranges in Azure Firewall | https://learn.microsoft.com/en-us/azure/firewall/snat-private-range |111| Configure Azure Firewall application rules with SQL FQDNs | https://learn.microsoft.com/en-us/azure/firewall/sql-fqdn-filtering |112| Configure Azure Firewall DNAT policy for inbound traffic | https://learn.microsoft.com/en-us/azure/firewall/tutorial-firewall-dnat-policy |113114### Integrations & Coding Patterns115| Topic | URL |116|-------|-----|117| Access Azure Storage via SFTP through Azure Firewall | https://learn.microsoft.com/en-us/azure/firewall/firewall-sftp |118119### Deployment120| Topic | URL |121|-------|-----|122| Deploy and configure Azure Firewall Premium environments | https://learn.microsoft.com/en-us/azure/firewall/premium-deploy |123| Deploy Azure Firewall and IP Groups using Bicep | https://learn.microsoft.com/en-us/azure/firewall/quick-create-ipgroup-bicep |124| Deploy Azure Firewall and IP Groups via ARM template | https://learn.microsoft.com/en-us/azure/firewall/quick-create-ipgroup-template |125| Deploy Azure Firewall and IP Groups using Terraform | https://learn.microsoft.com/en-us/azure/firewall/quick-create-ipgroup-terraform |126| Deploy Azure Firewall with Azure DDoS Protection | https://learn.microsoft.com/en-us/azure/firewall/tutorial-protect-firewall-ddos |
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