NMAP
NMAP (abbreviation for Network Mapper) is a de-facto tool for network information gathering. It belongs to the information gathering and enumeration category. At a glance, it may appear to be quite a small and simple tool. However, it is so comprehensive that a complete book could be dedicated on how to tune and configure NMAP as per our requirements. NMAP can give us a quick overview of what all ports are open and what services are running in our target network. This feed can be given to Metasploit for further action. While a detailed discussion on NMAP is out of the scope for this book, we'll certainly cover all the important aspects of NMAP in the later chapters.
Its official website is https://nmap.org/. The following screenshot ...
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