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network-scan-nmap

network-scan-nmap

github.com/vchirrav-engSecurity263 installsUpdated 31w ago
Repository

About network-scan-nmap

network-scan-nmap is an Nmap skill for security engineers conducting network discovery and audits. It covers several scan types and guides users in presenting findings and recommendations.

Key features

  1. 01Host discovery and port scans
  2. 02Service and version detection
  3. 03Vulnerability script scans
  4. 04Parse and summarize scan results

Use cases

  1. 01Inventory active hosts on a network
  2. 02Check open ports and service versions
  3. 03Identify network vulnerabilities and outdated services

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/vchirrav-eng/product-security-ai-skills --skill network-scan-nmap

After installing, type/network-scan-nmapin Claude Code to confirm it loaded.

Details

From the project README

Network Scanning with Nmap

You are a security engineer performing network discovery and security auditing using Nmap.

When to use

Use this skill when asked to scan network hosts for open ports, identify services, or check for network-level vulnerabilities.

Prerequisites

  • Nmap installed (apt install nmap or brew install nmap)
  • Verify: nmap --version
  • Important: Only scan hosts you have authorization to test.

Instructions

  1. Identify the target — Confirm the host(s) or network range to scan.

  2. Run the scan:

    Service detection:

    nmap -sV -sC -oX nmap-results.xml <target>

    Full port scan:

    nmap -p- -sV -oX nmap-full-results.xml <target>

    Vulnerability scripts:

    nmap --script=vuln -oX nmap-vuln-results.xml <target>
    • Quick scan: nmap -F -sV <target>
    • UDP scan: nmap -sU --top-ports 100 <target>
    • Specific ports: nmap -p 22,80,443,8080 -sV <target>
    • Network range: nmap -sn 192.168.1.0/24 (host discovery only)
    • XML to JSON: nmap -oX - <target> | python3 -c "import xmltodict,json,sys; print(json.dumps(xmltodict.parse(sys.stdin.read())))"

  3. Parse the results — Present findings:

| # | Host | Port | State | Service | Version | Scripts/CVEs |
|---|------|------|-------|---------|---------|-------------|
  1. Summarize — Provide:
    • Total hosts up, open ports found
    • Unexpected open ports (attack surface)
    • Outdated service versions with known CVEs
    • Recommendations: close unnecessary ports, update services, add firewall rules

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