enterprise-vpn-attack

enterprise-vpn-attack is a skill for Claude Code, Codex from uphiago/recon-skills. It costs 158 tokens per session (6,102 once invoked), scanned A, a copy of enterprise-vpn-attack, MIT.

A security-testing reference for internet-facing SSL VPN and remote-access appliances from several vendors. These appliances let people connect to private networks through a web-based service.

In plain words
What is it for?
Use it to fingerprint supported VPN products, inspect common web paths and cookies, identify authentication backends, and compare versions with known CVEs.
Why use it?
It helps identify which appliance is exposed and organize relevant version, login, and vulnerability checks within an authorized engagement.

Skill for Claude CodeCodex

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

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is -H 'Cookie: SESSID=../../../var/log/pan/test_$(id)_test.txt' \.

Good fit Use it to fingerprint supported VPN products, inspect common web paths and cookies, identify authentication backends, and compare versions with known CVEs.

Compare 6 skills from other repositories ↓
About the project

Recon Skills is a pack of security-testing skills covering reconnaissance, web applications, APIs, authentication, vulnerability validation, cloud infrastructure, and reporting. Security professionals use it for authorized assessments of systems they own or have written permission to test. The catalogue entries are individual skills from the pack.

uphiago/recon-skills · 1,318 stars · on GitHub · hiago.sh

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/uphiago/recon-skills
agentmods
npx agentmods add skills/uphiago/recon-skills/enterprise-vpn-attack

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 enterprise-vpn-attack

README.md
[![agentmods](https://agentmods.dev/badge/skills/uphiago/recon-skills/enterprise-vpn-attack/github.svg)](https://agentmods.dev/skills/uphiago/recon-skills/enterprise-vpn-attack)
Your own site
<a href="https://agentmods.dev/skills/uphiago/recon-skills/enterprise-vpn-attack"><img src="https://agentmods.dev/badge/skills/uphiago/recon-skills/enterprise-vpn-attack/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 enterprise-vpn-attack

Your own site · 80×15
<a href="https://agentmods.dev/skills/uphiago/recon-skills/enterprise-vpn-attack"><img src="https://agentmods.dev/badge/skills/uphiago/recon-skills/enterprise-vpn-attack.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 158 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,102 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 88% copy Near-identical to another mod 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 $0.00158 $0.06102
Opus 5.5 $0.00063 $0.02441
Sonnet 5.5 $0.00032 $0.01220
Haiku 4.5 $0.00016 $0.00610

Measured 1mo ago against content hash 6fafef260734, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

enterprise-vpn-attack scanned grade A with 1 finding 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 1mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl --max-time 30 --connect-timeout 10 -skI 'https://target/+CSCOE+/logon.html' | head -10
Origin

This is a copy

88% identical to enterprise-vpn-attack — 133 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

redteam/enterprise-vpn-attack/SKILL.md · 408 lines

How it starts

The opening of the file, as written. The whole thing — 408 lines — stays where its author put it; the contents beside it link to each section on GitHub.

When to use this skill

Trigger when recon surfaces:

  • *.<client>.example/+CSCOE+/logon.html or similar +CSCOE+ paths → Cisco ASA / AnyConnect
  • intranet.* / vpn.* / connect.* / webvpn.* / wc.* / remote.* subdomains
  • Port 443 returning login pages with Server: Apache or banner like "AnyConnect", "FortiGate", "NetScaler", "GlobalProtect", "Pulse", "Ivanti"
  • TCP 8443 / 4443 / 10443 / 8888 (common VPN web-mgmt ports)
  • HTTP responses with Set-Cookie: webvpn= (Cisco) / SVPNCOOKIE= (Fortinet) / NSC_AAA= (Citrix) / DSAuthSession= (Pulse) / BIGipServer* (F5)

DO NOT use for:

  • Internal lateral-movement post-foothold (out of scope per user's boundary)
  • VPN client-side bugs (different attack class)
  • IPsec / L2TP / OpenVPN (different protocols, not SSL VPN web stack)

Vendor identification (fingerprinting)

Cisco ASA / AnyConnect

curl --max-time 30 --connect-timeout 10 -skI 'https://target/+CSCOE+/logon.html' | head -10
# Look for: Set-Cookie: webvpn=; X-Frame-Options: SAMEORIGIN; CSP: ... block-all-mixed-content
# Login page contains: "AnyConnect", "CSCOE", "logon.html"

ASA version: not banner-disclosed in modern builds; need to derive from JS file paths or test specific paths.

# Path-based version hints (older builds leaked builds in URLs)
curl --max-time 30 --connect-timeout 10 -sk 'https://target/+CSCOE+/sdesktop/scan-finalize?path=test'
curl --max-time 30 --connect-timeout 10 -sk 'https://target/+CSCOE+/saml/sp/metadata'         # 200 = SAML auth enabled
curl --max-time 30 --connect-timeout 10 -sk 'https://target/CSCOSSLC/config-auth'             # AnyConnect handshake endpoint

Fortinet FortiGate / FortiOS

curl --max-time 30 --connect-timeout 10 -skI 'https://target/remote/login' | head -10
# Look for: Set-Cookie: SVPNCOOKIE=, Server header missing or "xxxxxxxx-xxxxx"
# Login page contains: "FortiGate", "Fortinet", "SSL-VPN"

Version: /remote/info sometimes leaks (older), or /login?username= 302 response

Read the full file on GitHub · 408 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. 1mo ago First seen · 408 lines · 158 tokens per session scan A 6fafef260734

Subscribe to this mod's changes

enterprise-vpn-attack is a skill published in the GitHub repository uphiago/recon-skills (1,318 stars, last pushed 1mo ago), licensed MIT. It adds 158 tokens to every session and 6,102 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). It is 88% identical to enterprise-vpn-attack, differing in 133 lines, and is treated as a copy.

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