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network-appliance-attacks

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Offensively test perimeter appliances and VPN crypto — IKE/IPsec aggressive mode, transform/DH enumeration, safe firmware/version inference for FortiGate / PAN-OS / Cisco ASA / Citrix feeding CVE applicability, TLS-version posture, and NTLM Type-2 info leaks. Load when an edge firewall, VPN, or load balancer is in scope. Signals: UDP 500/4500, ports 4433/10443/443 on an appliance, "SSL-VPN"/"Global Protect"/"Pulse"/"NetScaler" banners, Check Point SIC (18190/18191).

skills/network/network-appliance-attacks/SKILL.md

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27
Repository last updated
Oct 14, 2026
License
MIT

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# Perimeter appliance & VPN offensive testing

## When it applies
An internet-facing appliance is in scope — a firewall/SSL-VPN (FortiGate, PAN-OS/GlobalProtect,
Cisco ASA, Citrix NetScaler, Ivanti/Pulse), a Check Point gateway, or a load balancer — and you
must *test the live device*, not just audit its config (`network-service-attacks` covers generic
ports/SMB; `defense-hardening-baseline` is the config-audit counterpart). Edge appliances are today's number-one
initial-access vector, so a version→CVE call has to be precise.

## Why it works
Appliances expose crypto and management surfaces that leak more than they should: IKE aggressive
mode hands out a crackable PSK hash, unauthenticated NTLM challenges leak internal host/domain
names, and login pages/certs disclose enough to pin a firmware version. The trick is discipline:
**infer, don't assume** — a version banner alone never proves a CVE, because banners are
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