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Network Mapper, commonly known by its acronym Nmap, is an effective open-source network scanning and auditing tool. By default, Nmap comes with a wide range of tools and functionalities to perform host discovery, port scanning, operating systems and services, and versions. Nmap is quite capable and, at the same time, remains of the easiest cybersecurity and network auditing tools available.
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Installing Nmap
Nmap is open-source, which means that it is readily available for all major Linux distributions, as well as other operating systems, such as Windows, Mac OS, Solaris, and more.To download the binary for your system or compile it on your own, check out the resource provided below:
Quick Network Host Discovery
To perform a quick network host discovery using Nmap, use the -sn flag with the Nmap command. This flag tells Nmap to determine whether the hosts are active without conducting any port scans.
Consider the following scan for the network 192.168.0.1/24:
The above command scans the entire network and tells you which devices are active, as well as their respective IP addresses.
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