Nmap Cheat Sheet (original) (raw)

Last Updated : 23 Jul, 2025

**Nmap (Network Mapper) is a free and open-source network detection and security scanning utility. Many network and system administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring server or service availability. Nmap uses raw IP packets in a novel way to determine the hosts available on the network, the services they offer (application name and version), and the operating systems they are running (and operating systems). version). It's designed to scan large networks quickly but works well with a single host.

In this **Nmap Cheat Sheet, you'll learn all the basics to advanced like basic scanning techniques, discovery options in Nmap, Firewall evasion techniques, version detection, output options, scripting engines and more.

Usage of Nmap

• Auditing the security of a device or firewall by identifying the network connections that can be made to or through it.
• In preparation for auditing, identify open ports on a target host.
• Network inventory, network mapping, asset and maintenance management are all examples of network services.
• Identifying additional servers to test the network's security.
• Creating network traffic, analysing responses, and measuring response time.
• Used to Finding and exploiting vulnerabilities in a network.
• DNS queries and subdomain search

Usage:

nmap [] [] {}

NMAP Commands Cheat Sheet 2024

Basic Scanning Techniques

Discovery Options

Firewall Evasion Techniques

Version Detection

Output Options

Scripting Engine