azure-network-security-design

azure-network-security-design is a skill for Claude Code, Codex from vinayaklatthe/microsoft-security-skills. It costs 168 tokens per session (1,749 once invoked), scanned A, original, MIT.

Azure network security design guidance for building a protected Azure network. It covers network segmentation, private connections to managed services, controlled outbound traffic, firewalls, DDoS protection, and web application firewalls.

In plain words
What is it for?
Use it to choose hub-and-spoke or Virtual WAN architecture, divide networks with security rules, connect privately to Azure services, centralise outbound traffic, and place security controls.
Why use it?
It helps prevent every workload and service from being exposed or able to communicate freely. It provides a structure for controlling traffic and applying security measures consistently across subscriptions and regions.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to choose hub-and-spoke or Virtual WAN architecture, divide networks with security rules, connect privately to Azure services, centralise outbound traffic, and place security controls.

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Install with agentmods
npx agentmods add skills/vinayaklatthe/microsoft-security-skills/azure-network-security-design
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add vinayaklatthe/microsoft-security-skills --skill azure-network-security-design
Clone the repo
git clone --depth 1 https://github.com/vinayaklatthe/microsoft-security-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for azure-network-security-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/azure-network-security-design/github.svg)](https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/azure-network-security-design)
Your own site
<a href="https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/azure-network-security-design"><img src="https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/azure-network-security-design/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for azure-network-security-design

Your own site · 80×15
<a href="https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/azure-network-security-design"><img src="https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/azure-network-security-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 168 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,749 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00168 $0.01749
Opus 5 $0.00084 $0.00874
Sonnet 5 $0.00034 $0.00350
Haiku 4.5 $0.00017 $0.00175

Measured 11d ago against content hash 09e770283500, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

azure-network-security-design scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/azure-network-security-design/SKILL.md · 119 lines

How it starts

The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Azure Network Security Design

Secure Azure networking applies Zero Trust to the network pillar: segment, control traffic explicitly, prefer private connectivity, and inspect / filter egress, assuming the network is hostile. The output is a hub-spoke (or Virtual WAN) topology with NSG microsegmentation, private endpoints, and a single controlled egress path.

When to use

Designing the network topology and controls for an Azure landing zone or workload. Use this skill to pick topology, design segmentation, and place controls.

Do not use this skill for the firewall product itself (azure-firewall), VM hardening (defender-for-cloud-hardening), or single-service networking (azure-key-vault).

Pick the topology

Estate shape Topology Notes
Single region, few subscriptions Hub-spoke (single region) Default for most
Multi-region with many spokes / branch sites Virtual WAN Microsoft-managed transit
Greenfield enterprise-scale Azure Landing Zones (CAF) - VWAN or hub-spoke Use CAF blueprints
Heavy on-prem + Azure Hub-spoke + ExpressRoute / VPN gateway Hub holds gateway + firewall
Small / single-workload Single VNet, no hub Don't over-engineer

Rule of thumb: hub-spoke for most enterprises, Virtual WAN at multi-region branch scale. The hub holds shared services (firewall, gateway, DNS, Bastion); workloads sit in spokes. Don't put workloads in the hub.

Approach

  1. Topology and address plan — Pick hub-spoke or Virtual WAN. Allocate non-overlapping RFC 1918 ranges per region / spoke; reserve gateway subnet, firewall subnet, Bastion subnet in the hub. Verify: address plan documented; no overlap with on-prem ranges; no overlap between regions.

  2. Segmentation with NSGs and ASGs — NSG at subnet level (preferred over per-NIC). Group workloads with Application Security Groups (ASGs) instead of static IP lists - ASGs survive scale events. Microsegment by tier: web / app / data. Verify: NSG flow logs enabled to a Log Analytics workspace; default-deny rule present; ASGs used instead of IP-based source/dest for VM groups.

Read the full file on GitHub · 119 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 119 lines · 168 tokens per session scan A 09e770283500

Subscribe to this mod's changes

azure-network-security-design is a skill published in the GitHub repository vinayaklatthe/microsoft-security-skills (173 stars, last pushed 2mo ago), licensed MIT. It adds 168 tokens to every session and 1,749 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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