ClaudSkills / Security / network-security

Network Netcat

Q: What is a Claude Code skill and how does the Network Netcat skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Network Netcat is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Security · Sub-category: network-security · Last updated: 2026-05-21

type:scanner

Network utility for reading and writing data across TCP/UDP connections, port scanning, file transfers, and backdoor communication channels. Use when: (1) Testing network connectivity and port availability, (2) Creating reverse shells and bind shells for authorized penetration testing, (3) Transferring files between systems in restricted environments, (4) Banner grabbing and service enumeration, (5) Establishing covert communication channels, (6) Testing firewall rules and network segmentation.

Security BStatic scan: minor findingsHow grading works ›

About this skill (catalog notes)

Network Netcat includes a dedicated installation section; 28 code blocks for direct copy-paste. At roughly 1,913 words the SKILL.md is on the longer end of the catalog distribution.

Original author: [email protected]
Indexed lastmod: 2026-05-21
Catalog position: Security · network-security
Indexed related skills: 10

How Network Netcat fits the catalog

Network Netcat sits in the Security category under the network-security sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

What this skill does

Network Netcat is a community-contributed Claude Code skill in the network-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/network-netcat/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when: (1) Testing network connectivity and port availability, (2) Creating reverse shells and bind shells for authorized penetration testing, (3) Transferring files between systems in restricted environments, (4) Banner grabbing and service enumeration, (5) Establishing covert communication channels, (6) Testing firewall rules and network segmentation.

Who uses this skill

The Network Netcat Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 115,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/network-netcat
curl -L https://claudskills.com/skills/network-netcat/SKILL.md \
  -o ~/.claude/skills/network-netcat/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/network-netcat/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/network-netcat/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\network-netcat\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Network Netcat Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/network-netcat/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Network Netcat skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Network Netcat skill?

Use Network Netcat when your Claude Code task falls under the Security category — specifically in the network security area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Network Netcat" or describe the task and let Claude pick). Browse related skills at /category/security/.

What is a Claude Code skill and how does the Network Netcat skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Network Netcat is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/swisskyrepo/PayloadsAllTheThings
Author: [email protected]

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

[email protected]. (2026). Network Netcat [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/network-netcat/

BibTeX

@misc{network-netcat-2026,
  author    = {[email protected]},
  title     = {Network Netcat [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/network-netcat/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/network-netcat.svg)](https://claudskills.com/skills/network-netcat/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade B · scanned 2026-06-13 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 4 of 10 categories (filesystem, network, persistence, reverse-shell), including a critical-severity pattern. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
⚠ Reverse shell
✓ Credentials
✓ Execution
⚠ Filesystem
⚠ Persistence
✓ Obfuscation
⚠ Network

Show this grade on your repo (click to copy):

[![Security: B](https://img.shields.io/badge/Security-B-558b2f)](https://claudskills.com/skills/network-netcat/#security)

More Security skills

Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Security skills → Top 100 skills

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