agentmods.dev

network-vpn-security

network-vpn-security is a skill for Codex from ashermahonin/agentic-skills. It costs 60 tokens per session (573 once invoked), scanned A, original, MIT.

A guide for designing and troubleshooting private networks, including cloud networks, VPNs, firewalls, DNS, and Kubernetes network policies. A VPN is an encrypted connection between networks or devices.

In plain words
What is it for?
Use it to plan or debug routing, DNS, firewall rules, VPNs, private endpoints, bastions, zero-trust access, and secure service connectivity.
Why use it?
It helps find connectivity problems while keeping traffic restricted to the intended systems and ports. It also makes network changes easier to observe and reverse safely.

Skill for Codex

Written for Codex: agents/openai.yaml present.

not rated 10repo 2mo ago A scan 60 tokens original MIT

Good fit Use it to plan or debug routing, DNS, firewall rules, VPNs, private endpoints, bastions, zero-trust access, and secure service connectivity.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ashermahonin/agentic-skills/network-vpn-security
View source ↗ ashermahonin/agentic-skills
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 ashermahonin/agentic-skills --skill network-vpn-security
Clone the repo
git clone --depth 1 https://github.com/ashermahonin/agentic-skills

Made for: 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 network-vpn-security

README.md
[![agentmods](https://agentmods.dev/badge/skills/ashermahonin/agentic-skills/network-vpn-security/github.svg)](https://agentmods.dev/skills/ashermahonin/agentic-skills/network-vpn-security)
Your own site
<a href="https://agentmods.dev/skills/ashermahonin/agentic-skills/network-vpn-security"><img src="https://agentmods.dev/badge/skills/ashermahonin/agentic-skills/network-vpn-security/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 network-vpn-security

Your own site · 80×15
<a href="https://agentmods.dev/skills/ashermahonin/agentic-skills/network-vpn-security"><img src="https://agentmods.dev/badge/skills/ashermahonin/agentic-skills/network-vpn-security.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 573 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 $0.00060 $0.00573
Opus 5.5 $0.00024 $0.00229
Sonnet 5.5 $0.00012 $0.00115
Haiku 4.5 $0.00006 $0.00057

Measured 2mo ago against content hash 238757f60237, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

network-vpn-security 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 2mo 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.

agentic/skills/network-vpn-security/SKILL.md · 49 lines

How it starts

The opening of the file, as written. The whole thing — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Network VPN Security

Purpose

You design and troubleshoot connectivity by starting with traffic flows and trust boundaries. A network change is only good if it is reachable, predictable, secure, observable, and reversible.

Operational context

  1. Read references/workflow.md.
  2. Identify endpoints, networks, protocols, ports, trust zones, latency/bandwidth requirements, availability needs, compliance constraints, and current failure symptoms.
  3. Verify current documentation for cloud networking, VPN, firewall syntax, DNS, ingress, CNI, service mesh, load balancers, PKI/TLS, and CLI/API behavior.

Safe change sequence

  1. Define who must communicate with whom, over which protocol/port, from where to where, and what must remain blocked.
  2. Model topology, trust boundaries, segmentation, routing, DNS, NAT, firewall placement, HA, observability, and admin access.
  3. For VPN, define type, protocol, authentication, encryption, lifetime/rekey, NAT traversal, split/full tunnel, routes, DNS, and endpoint hardening.
  4. Implement rules, routes, DNS, VPN/IaC/configuration, and validation commands with least privilege.
  5. Validate real traffic path, DNS, route tables, tunnel status, firewall decisions, auth, logs, failover, MTU, and rollback.

Safety rules

  • Use Context7 MCP for current cloud, Kubernetes, IaC, CI/CD, container, observability, security, network, API, CLI, provider, and configuration documentation whenever the task depends on external technology behavior.

Change record

Provide topology, trust boundaries, documentation validation status, security model, implementation, validation steps, risks/rollback, and assumptions.

Verification

  • Avoid broad 0.0.0.0/0, ::/0, any-any, and oversized CIDRs without explicit risk.
  • Use deny-by-default and allow-by-exception where possible.
  • Do not ignore DNS, MTU, NAT, or asymmetric routing during troubleshooting.
  • Keep user access, admin access, and service-to-service connectivity separated where possible.
  • Include logging and audit for critical access paths.

Read the full file on GitHub · 49 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. 2mo ago First seen · 49 lines · 60 tokens per session scan A 238757f60237

Subscribe to this mod's changes

network-vpn-security is a skill published in the GitHub repository ashermahonin/agentic-skills (10 stars, last pushed 2mo ago), licensed MIT. It adds 60 tokens to every session and 573 once invoked, about $0.0002 per session on Opus 5.5. 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.

CloudDevOps and cloudSecurity
Related

network-vpn-security compared with skills from other repositories

network-vpn-security next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
network-vpn-securityashermahonin/agentic-skillsSkill102mo agoMITA60Codex
gke-compute-classesgoogle/skillsSkill22kyesterdayApache-2.0A83Claude Code, Codex
gke-reliabilitygoogle/skillsSkill22kyesterdayApache-2.0A85Claude Code, Codex
gke-workload-securitygoogle/skillsSkill22kyesterdayApache-2.0A171Claude Code, Codex
cloud-architectJeffallan/claude-skillsSkill12k7d agoMITA71Claude Code
nemo-automodel-launcher-configNVIDIA/skillsSkill3.9kyesterdayApache-2.0A30Claude Code
azure-mgmt-botservice-dotnetmicrosoft/skillsSkill3.2kyesterdayMITA78Claude Code