network-appliance-offensive
SkillOffensive testing of perimeter network appliances and VPN crypto — IKE/IPsec (aggressive-mode, transform/DH enum, NAT-T), Check Point SIC/OPSEC, safe firmware/patch-level inference for FortiGate/PAN-OS/Cisco ASA/Citrix feeding CVE applicability, NTLM Type-2 target-info decode, handshake-completion T
Install
git clone https://github.com/transilienceai/communitytools.git ~/.claude/skills/network-appliance-offensiveWhat is network-appliance-offensive?
Offensive testing of perimeter network appliances and VPN crypto — IKE/IPsec (aggressive-mode, transform/DH enum, NAT-T), Check Point SIC/OPSEC, safe firmware/patch-level inference for FortiGate/PAN-OS/Cisco ASA/Citrix feeding CVE applicability, NTLM Type-2 target-info decode, handshake-completion TLS-version probing, and an RST-TTL forgery discriminator. The active/offensive counterpart to the static firewall-review skill. Use when a perimeter firewall/VPN/appliance is in scope and you must test it (not just audit a config), without reinventing raw-socket protocol tooling each engagement.
What this can do
Capabilities declared in this component's own frontmatter — not inferred.
Inherit all session tools
Declares no tool restrictions — inherits every session tool
~149 tokens of context used while enabled, before you invoke anything
Documentation
README · ~3 min readNetwork-Appliance Offensive
firewall-review audits a config statically; infrastructure covers generic ports/DNS/SMB. Neither tests a live perimeter appliance or its VPN crypto — so IKE builders, SIC/OPSEC fingerprinting, and TTL discriminators were reinvented from raw sockets each engagement, often shallowly, and CVE applicability was left UNDETERMINED across whole estates. This skill provides the deterministic, tested tools and the precondition-gated methodology. Non-destructive only — every tool observes/decodes/infers; none fires an exploit, and CVE applicability is a precondition check, never a blind "vulnerable."
Tools
| Tool | Does | Anti-footgun |
|---|---|---|
tools/ike_enum.py | IKEv1 aggressive-mode detection, IKEv1/IKEv2 transform + DH-group enum, NOTIFY / NAT-T decode (wraps ike-scan, raw ISAKMP SA_INIT builder fallback) | Aggressive-mode support (PSK-hash leak) is the finding; enumerate, don't crack in-band |
tools/checkpoint_sic_opsec.py | Fingerprint SIC (18190/1), OPSEC LEA/ELA (18183/4), CA (18192/18210), FW1 (256/264), Gaia Portal; emit a CVE-precondition map incl. CVE-2024-24919 | CVE-2024-24919 is applicable ONLY when the RA/Mobile-Access marker is observed — else undetermined |
tools/appliance_version_infer.py | Safe firmware/patch-level inference for FortiGate / PAN-OS / Cisco ASA / Citrix from headers, login markers, cert CN/serial → CVE applicability | Never asserts applicable on a low-confidence / unknown version — returns undetermined |
tools/tls_handshake_probe.py | Which TLS versions are supported, by completed handshake per pinned protocol | Fixes the openssl s_client exit/SECLEVEL false-positive — an aborted handshake ≠ support |
tools/ntlm_decode.py | Decode an NTLM Type-2 (CHALLENGE) AV_PAIR block → NetBIOS/DNS host, domain, forest, OS build | Info-leak finding from an unauthenticated challenge; no auth attempted |
Reviews
Log in to leave a review.
No reviews yet — be the first.
Explore related
Other things in this space — across every part of the ecosystem, not just skills.
Skillssimilar to this one
All skills →ECC
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
235.3K stars
claude-md-improver
Audit and improve CLAUDE.md files in repositories. Use when user asks to check, audit, update, improve, or fix CLAUDE.md files. Scans for all CLAUDE.md files, evaluates quality against templates, outputs quality report, then makes targeted updates. Also use when the user mentions "CLAUDE.md maintena
32.8K stars
Anthropic-Cybersecurity-Skills
817 structured cybersecurity skills for AI agents · Mapped to 6 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND, NIST AI RMF & MITRE F3 (Fight Fraud) · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 29 security domains · Apache 2.0
26.9K stars
Plugins
All plugins →claude-security
Deep vulnerability scanning of your own code, run entirely inside your Claude Code session at a chosen effort tier, with every finding challenged before it is reported and the verification tally computed in code. Turns surviving findings into targeted patches, each verified by a panel of agents, tha
32.9K stars
claude-md-management
Tools to maintain and improve CLAUDE.md files - audit quality, capture session learnings, and keep project memory current.
32.9K stars
math-olympiad
Solve competition math (IMO, Putnam, USAMO) with adversarial verification that catches what self-verification misses. Fresh-context verifiers attack proofs with specific failure patterns. Calibrated abstention over bluffing.
32.9K stars
MCP Servers
All mcp servers →Commands
All commands →modernize-harden
Security vulnerability scan with a reviewable remediation patch — OWASP, CWE, CVE, secrets, injection
32.8K stars
modernize-status
Where am I in the modernization workflow — artifact inventory, staleness, secrets hygiene, next step
32.8K stars
audit-ssl
Audit ZIA SSL inspection rules -- list rules by action (INSPECT, DO_NOT_INSPECT, DO_NOT_DECRYPT, BLOCK), identify bypasses, and assess risk.
Subagents
All subagents →ECC
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
235.3K stars
claude-security
The dedicated Claude Security orchestrator. Hand it an unattended job — "fully scan this repository and patch what you find; I understand it will use a lot of tokens" — and it runs the whole thing itself: capturing the revision, driving the multi-agent scan through the claude-security:scan workflow,
32.8K stars
scan-verifier
Restricted read-only verifier dispatched by the Claude Security scan workflow to vote on one candidate finding; not for direct invocation.
32.8K stars