Azure Nat Gateway

Included skill

Azure Nat Gateway

Expert knowledge for Azure NAT Gateway development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, and deployment. Use when managing SNAT ports, outbound IPs, flow logs/metrics, Standard vs StandardV2, or Azure Firewall egress, and other Azure NAT Gateway related development tasks. Not for Azure Virtual Network (use azure-virtual-network), Azure Load Balancer (use azure-load-balancer), Azure Virtual WAN (use azure-virtual-wan), Azure VPN Gateway (use azure-vpn-gateway).

Source: /skills/azure-nat-gateway/SKILL.md

Azure NAT Gateway Skill

This skill provides expert guidance for Azure NAT Gateway. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, 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), 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 file

IMPORTANT for Agent: If metadata.generated_at is more than 3 months old, suggest the user pull the latest version from the repository. If mcp_microsoftdocs tools 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_fetch with query string from=learn-agent-skill. Returns Markdown.
  • Fallback: Use fetch_webpage with query string from=learn-agent-skill&accept=text/markdown. Returns Markdown.

Category Index

Category Lines Description
Troubleshooting L36-L40 Diagnosing and fixing NAT Gateway issues: reading flow logs, resolving misconfigurations, connectivity failures with Azure services, and outbound internet connection problems.
Best Practices L41-L45 Guidance on reducing SNAT port exhaustion and optimizing outbound connectivity patterns when using Azure NAT Gateway.
Decision Making L46-L52 Guidance on choosing NAT Gateway Standard vs StandardV2 SKUs and step-by-step migration of existing outbound access and gateways to StandardV2.
Architecture & Design Patterns L53-L58 Designing VNETs with NAT Gateway, choosing patterns for outbound connectivity, and scaling/combining NAT Gateway with Azure Firewall for secure, high-throughput egress traffic.
Limits & Quotas L59-L63 NAT Gateway limits, quotas, and behaviors: SNAT port allocation, connection scaling, IP/VM limits, per-subscription caps, and FAQs on throughput and high-connection scenarios.
Security L64-L68 Security best practices for NAT Gateway: hardening design, minimizing exposure, managing outbound IPs, monitoring traffic, and integrating with NSGs, firewalls, and other Azure security controls.
Configuration L69-L77 Configuring NAT Gateway and IPs, enabling/using flow logs, monitoring with metrics/logs and alerts, and deploying NAT Gateway V2 via ARM, Bicep, or Terraform.
Deployment L78-L82 Guides for redeploying NAT Gateway after cross-region moves and migrating VM outbound traffic from public IPs to use NAT Gateway

Troubleshooting

Topic URL
Monitor and troubleshoot with NAT Gateway flow logs https://learn.microsoft.com/en-us/azure/nat-gateway/monitor-nat-gateway-flow-logs

Best Practices

Topic URL
Optimize SNAT usage with Azure NAT Gateway https://learn.microsoft.com/en-us/azure/nat-gateway/nat-gateway-snat

Decision Making

Topic URL
Migrate Azure NAT Gateway from Standard to StandardV2 https://learn.microsoft.com/en-us/azure/nat-gateway/nat-gateway-v2-migrate
Choose between Azure NAT Gateway Standard SKUs https://learn.microsoft.com/en-us/azure/nat-gateway/nat-sku
Migrate Azure outbound access to NAT Gateway https://learn.microsoft.com/en-us/azure/nat-gateway/tutorial-migrate-outbound-nat

Architecture & Design Patterns

Topic URL
Design Azure virtual networks with NAT Gateway https://learn.microsoft.com/en-us/azure/nat-gateway/nat-gateway-design
Scale outbound traffic with NAT Gateway and Azure Firewall https://learn.microsoft.com/en-us/azure/nat-gateway/tutorial-hub-spoke-nat-firewall

Limits & Quotas

Topic URL
Azure NAT Gateway FAQ with limits and behaviors https://learn.microsoft.com/en-us/azure/nat-gateway/faq

Security

Topic URL
Apply security best practices to Azure NAT Gateway https://learn.microsoft.com/en-us/azure/nat-gateway/secure-nat-gateway

Configuration

Topic URL
Manage Azure NAT Gateway configuration and IPs https://learn.microsoft.com/en-us/azure/nat-gateway/manage-nat-gateway
Reference Azure NAT Gateway monitoring metrics and logs https://learn.microsoft.com/en-us/azure/nat-gateway/monitor-nat-gateway-reference
Enable and use StandardV2 NAT Gateway flow logs https://learn.microsoft.com/en-us/azure/nat-gateway/nat-gateway-flow-logs
Configure metrics and alerts for Azure NAT Gateway https://learn.microsoft.com/en-us/azure/nat-gateway/nat-metrics
Deploy NAT Gateway V2 using ARM, Bicep, or Terraform https://learn.microsoft.com/en-us/azure/nat-gateway/quickstart-create-nat-gateway-v2-templates

Deployment

Topic URL
Redeploy NAT gateway after cross-region resource moves https://learn.microsoft.com/en-us/azure/nat-gateway/region-move-nat-gateway
Move VM public IP outbound traffic to NAT Gateway https://learn.microsoft.com/en-us/azure/nat-gateway/tutorial-migrate-ilip-nat