Using Nmap to perform layer 2 discovery
Network Mapper (Nmap) is one of the most effective and functional tools in Kali Linux. Nmap can be used to perform a large range of different scanning techniques and is highly customizable. This tool will be addressed frequently throughout the course of this book. In this specific recipe, we will discuss how to use Nmap to perform layer 2 scanning.
Getting ready
To use Nmap to perform ARP discovery, you will need to have at least one system on the LAN that will respond to ARP requests. In the examples provided, a combination of Linux and Windows systems are used. For more information on setting up systems in a local lab environment, please refer to the Installing Metasploitable2 and Installing Windows Server recipes in Chapter 1, Getting Started.
How to do it…
Nmap is another option to perform automated layer 2 discovery scans with a single command. The -sn option is referred to by Nmap as a ping scan. Although the term "ping scan" naturally...
