1---2name: azure-nat-gateway3description: Expert knowledge for Azure NAT Gateway development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, configuration, and deployment. Use when planning SNAT capacity, configuring IPs/flow logs, fixing outbound failures, or choosing Standard vs StandardV2, and other Azure NAT Gateway related development tasks. Not for Azure Firewall (use azure-firewall), Azure Load Balancer (use azure-load-balancer), Azure Virtual Network (use azure-virtual-network), Azure Virtual WAN (use azure-virtual-wan).4---5# Azure NAT Gateway Skill
6
7This skill provides expert guidance for Azure NAT Gateway. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, configuration, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.
8
9## How to Use This Skill
10
11> **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
12
13> **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](https://github.com/MicrosoftDocs/mcp/blob/main/README.md)
14
15This skill requires **network access** to fetch documentation content:
16- **Preferred**: Use `mcp_microsoftdocs:microsoft_docs_fetch` with query string `from=learn-agent-skill`. Returns Markdown.
17- **Fallback**: Use `fetch_webpage` with query string `from=learn-agent-skill&accept=text/markdown`. Returns Markdown.
18
19## Category Index
20
21| Category | Lines | Description |
22|----------|-------|-------------|
23| Troubleshooting | L35-L42 | Diagnosing and fixing NAT Gateway issues: reading flow logs, resolving misconfigurations, connectivity failures with Azure services, and outbound internet connection problems. |
24| Best Practices | L43-L47 | Guidance on reducing SNAT port exhaustion and optimizing outbound connectivity patterns when using Azure NAT Gateway. |
25| Decision Making | L48-L53 | Guidance on when to use each Azure NAT Gateway SKU (Standard vs StandardV2), feature/cost tradeoffs, and how to plan and execute migration from Standard to StandardV2. |
26| Architecture & Design Patterns | L54-L62 | Design patterns for placing NAT Gateway in VNets, hub-spoke, with NVAs, and with internal/public load balancers, plus scaling outbound traffic and combining with Azure Firewall. |
27| Limits & Quotas | L63-L67 | NAT Gateway FAQs plus limits on SNAT ports, IPs, throughput, connections, and other quotas, with guidance on capacity planning and scaling. |
28| Configuration | L68-L76 | Configuring NAT Gateway (Standard and StandardV2), managing IPs/resources, setting up flow logs, and configuring monitoring, metrics, and alerts for gateway traffic. |
29| Deployment | L77-L83 | How to deploy and redeploy NAT Gateway (ARM/Bicep), migrate or move outbound traffic from VMs/public IPs, and transition existing outbound access to Azure NAT Gateway. |
30
31### Troubleshooting
32| Topic | URL |
33|-------|-----|
34| Monitor and troubleshoot with NAT Gateway flow logs | https://learn.microsoft.com/en-us/azure/nat-gateway/monitor-nat-gateway-flow-logs |
35| Troubleshoot Azure NAT Gateway configuration issues | https://learn.microsoft.com/en-us/azure/nat-gateway/troubleshoot-nat |
36| Fix NAT Gateway connectivity with other Azure services | https://learn.microsoft.com/en-us/azure/nat-gateway/troubleshoot-nat-and-azure-services |
37| Resolve Azure NAT Gateway outbound connectivity problems | https://learn.microsoft.com/en-us/azure/nat-gateway/troubleshoot-nat-connectivity |
38
39### Best Practices
40| Topic | URL |
41|-------|-----|
42| Optimize SNAT usage with Azure NAT Gateway | https://learn.microsoft.com/en-us/azure/nat-gateway/nat-gateway-snat |
43
44### Decision Making
45| Topic | URL |
46|-------|-----|
47| Migrate Azure NAT Gateway to StandardV2 | https://learn.microsoft.com/en-us/azure/nat-gateway/nat-gateway-v2-migrate |
48| Choose between Azure NAT Gateway SKUs | https://learn.microsoft.com/en-us/azure/nat-gateway/nat-sku |
49
50### Architecture & Design Patterns
51| Topic | URL |
52|-------|-----|
53| Design virtual networks using Azure NAT Gateway | https://learn.microsoft.com/en-us/azure/nat-gateway/nat-gateway-design |
54| Scale outbound traffic with NAT Gateway and Azure Firewall | https://learn.microsoft.com/en-us/azure/nat-gateway/tutorial-hub-spoke-nat-firewall |
55| Integrate NAT Gateway in hub-spoke with NVA | https://learn.microsoft.com/en-us/azure/nat-gateway/tutorial-hub-spoke-route-nat |
56| Use NAT Gateway with internal load balancer | https://learn.microsoft.com/en-us/azure/nat-gateway/tutorial-nat-gateway-load-balancer-internal-portal |
57| Use NAT Gateway with public load balancer | https://learn.microsoft.com/en-us/azure/nat-gateway/tutorial-nat-gateway-load-balancer-public-portal |
58
59### Limits & Quotas
60| Topic | URL |
61|-------|-----|
62| Azure NAT Gateway FAQ and service limits | https://learn.microsoft.com/en-us/azure/nat-gateway/faq |
63
64### Configuration
65| Topic | URL |
66|-------|-----|
67| Manage Azure NAT Gateway configuration and IPs | https://learn.microsoft.com/en-us/azure/nat-gateway/manage-nat-gateway |
68| Reference for Azure NAT Gateway monitoring data | https://learn.microsoft.com/en-us/azure/nat-gateway/monitor-nat-gateway-reference |
69| Enable and use StandardV2 NAT Gateway flow logs | https://learn.microsoft.com/en-us/azure/nat-gateway/nat-gateway-flow-logs |
70| Configure Azure NAT Gateway resource components | https://learn.microsoft.com/en-us/azure/nat-gateway/nat-gateway-resource |
71| Configure metrics and alerts for Azure NAT Gateway | https://learn.microsoft.com/en-us/azure/nat-gateway/nat-metrics |
72
73### Deployment
74| Topic | URL |
75|-------|-----|
76| Deploy Standard V2 NAT Gateway with ARM/Bicep | https://learn.microsoft.com/en-us/azure/nat-gateway/quickstart-create-nat-gateway-v2-templates |
77| Redeploy NAT Gateway after cross-region resource move | https://learn.microsoft.com/en-us/azure/nat-gateway/region-move-nat-gateway |
78| Move VM public IP outbound traffic to NAT Gateway | https://learn.microsoft.com/en-us/azure/nat-gateway/tutorial-migrate-ilip-nat |
79| Migrate outbound access to Azure NAT Gateway | https://learn.microsoft.com/en-us/azure/nat-gateway/tutorial-migrate-outbound-nat |
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