Network Scanning Tool: Nmap

Nmap stands for “Network Mapper”.

It is a free and open source tool used for network scanning and security auditing. It was written by Gordon Lyon (also known by his pseudonym Fyodor Vaskovich). It supports different techniques like host discovery, port scanning, service discovery, OS detection, version detection and many more. It can be used to scan any type of network, even with many devices.

Nmap uses raw IP packets in different ways to determine the available hosts on the network, the services those hosts are offering, operating system (versions) they are running, the types of packet filters or firewalls in use, etc.

Syntax of nmap command:

nmap [Scan Type(s)] [Options] {target specifications}

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