caf-network-topology-connectivity

caf-network-topology-connectivity is a skill for Claude Code, Codex from janegilring/awesome-azure-landing-zones. It costs 171 tokens per session (1,636 once invoked), scanned A, original, MIT.

A guide for designing Azure cloud network foundations. It covers network layouts, IP addresses, DNS, private endpoints, traffic inspection, and links to on-premises systems.

In plain words
What is it for?
Use it when planning hub-and-spoke or Virtual WAN networks, private name resolution, firewall routing, ExpressRoute, or VPN connections.
Why use it?
Early network choices affect every application in an Azure landing zone and can be expensive to change later. The guide helps compare the main connectivity options.

Skill for Claude CodeCodex

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

Good fit Use it when planning hub-and-spoke or Virtual WAN networks, private name resolution, firewall routing, ExpressRoute, or VPN connections.

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Install with agentmods
npx agentmods add skills/janegilring/awesome-azure-landing-zones/caf-network-topology-connectivity
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 janegilring/awesome-azure-landing-zones --skill caf-network-topology-connectivity
Clone the repo
git clone --depth 1 https://github.com/janegilring/awesome-azure-landing-zones

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 caf-network-topology-connectivity

README.md
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Your own site
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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 caf-network-topology-connectivity

Your own site · 80×15
<a href="https://agentmods.dev/skills/janegilring/awesome-azure-landing-zones/caf-network-topology-connectivity"><img src="https://agentmods.dev/badge/skills/janegilring/awesome-azure-landing-zones/caf-network-topology-connectivity.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 171 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,636 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 $0.00171 $0.01636
Opus 5 $0.00086 $0.00818
Sonnet 5 $0.00034 $0.00327
Haiku 4.5 $0.00017 $0.00164

Measured 12d ago against content hash ae6d775bc36a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

caf-network-topology-connectivity 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 12d 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/caf-network-topology-connectivity/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.

Network topology and connectivity

Overview

Networking is central to almost everything inside an Azure landing zone: it connects workloads to each other, to platform shared services, to external users, and to on-premises infrastructure. This design area sits in the environment group of the eight ALZ design areas because the decisions here shape the platform foundation that every landing zone depends on. Get the topology, IP plan, DNS, and inspection model right early — these are expensive to change later.

In the conceptual ALZ architecture, network resources for the platform live in the Connectivity management group (typically one Connectivity subscription), while workloads run in Corp (private, possibly hybrid-connected) and Online (internet-facing) landing zones.

When to use this skill

  • Deciding between hub-and-spoke (customer-managed) and Virtual WAN (Microsoft-managed).
  • Planning IP addressing, regions, and multi-region growth.
  • Designing DNS, Private Link, and private endpoint name resolution.
  • Planning egress/ingress inspection (Azure Firewall / NVA) and forced tunneling.
  • Connecting on-premises via ExpressRoute or VPN, and choosing where gateways live.
  • Reviewing an existing landing zone's connectivity design against CAF recommendations.

Key concepts

  • Connectivity subscription — platform-owned subscription hosting shared network resources (gateways, firewall, DNS, DDoS) in the Connectivity management group.
  • Hub-and-spoke — a hub VNet provides shared services and hybrid connectivity; spoke VNets (workloads) peer to it. You manage the hub, routing, and peering yourself.
  • Virtual WAN — Microsoft-managed hubs provide built-in any-to-any transitive connectivity and global transit across regions. Hubs only host Microsoft-managed resources (gateways, Azure Firewall via Firewall Manager, route tables, select NVAs).
  • Secured virtual hub — a Virtual WAN hub with Azure Firewall managed by Firewall Manager.
  • Private endpoint / Private Link — private IP access to Azure PaaS, removing public exposure; requires deliberate private DNS design to resolve privatelink.* zones.
  • Azure DNS Private Resolver — enables on-premises and hub services (e.g. Azure Firewall DNS proxy) to resolve private DNS zones; the recommended building block for DNS at scale.
  • UDR (user-defined route) — forces spoke traffic through the hub firewall for inspection.
  • Subscription democratization — each workload (or workload-environment) gets its own subscription and VNet; hub-spoke/Virtual WAN is how those VNets share connectivity and inspection.

Read the full file on GitHub · 119 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 12d ago First seen · 119 lines · 171 tokens per session scan A ae6d775bc36a

Subscribe to this mod's changes

caf-network-topology-connectivity is a skill published in the GitHub repository janegilring/awesome-azure-landing-zones (3 stars, last pushed 2mo ago), licensed MIT. It adds 171 tokens to every session and 1,636 once invoked, about $0.0009 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 2026-08-31.

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