Port Scanning with Nmap

Nmap is the most widely used tool for port scanning, giving testers a fast, flexible way to map out open ports and services on a target.

Why Nmap is the Standard Tool

Nmap's combination of speed, flexibility, and detailed output has made it the default port scanning tool taught and used across the cybersecurity industry.

Basic Scanning Techniques

A simple scan can quickly reveal which ports are open on a target, while more targeted scans narrow the focus to specific ports or port ranges relevant to the engagement.

Service and Version Detection

Beyond open ports, Nmap can detect the specific service and version running on each one, information that's critical for identifying known vulnerabilities in the next phase.

Scan Timing and Stealth

Nmap offers different timing templates that balance scan speed against the likelihood of detection, an important consideration during authorized but stealth-sensitive engagements.