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Nmap tutorial — network scanning

23. 09. 2025 1 min read intermediate

Nmap je nejpoužívanější nástroj pro network discovery a security auditing. Od jednoduchého port scanu po komplexní vulnerability assessment.

Základní skeny

Quick scan

nmap target.com

Všechny porty + service detection

nmap -sV -p- target.com

OS detection + scripts

nmap -sV -sC -O target.com

UDP scan

nmap -sU –top-ports 100 target.com

Stealth scan (SYN)

nmap -sS -T4 target.com

NSE scripty

Vulnerability scanning

nmap –script vuln target.com

SSL audit

nmap –script ssl-enum-ciphers -p 443 target.com

HTTP enumeration

nmap –script http-enum -p 80,443 target.com

Brute force

nmap –script ssh-brute -p 22 target.com

Output formáty

nmap -oA scan_results target.com # Všechny formáty nmap -oX scan.xml target.com # XML pro parsování nmap -oG scan.grep target.com # Grepable

Key Takeaway

nmap -sV -sC -O pro kompletní audit. NSE scripty pro vulnerability scanning. Vždy s povolením vlastníka.

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CORE SYSTEMS tým

Stavíme core systémy a AI agenty, které drží provoz. 15 let zkušeností s enterprise IT.