Nmap

Fast, scriptable network scanner — the standard for port scanning and service enumeration.

Quick Start

# Basic TCP SYN scan, top 1000 ports
nmap -sS -T4 <target>

# Full port scan with version + scripts + OS detection
nmap -sS -sV -sC -O -p- -T4 <target> -oA output/nmap_full

# Fast top-100 ports
nmap -F -T4 <target>

Core Scan Types