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Information gathering using nmap

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             NMAP|PENETRATION TESTING TOOL INTRODUCTION Nmap (Network mapper) is a free and open source tool used for network discovery and security auditing. Nmap is a CLI(command line interface) based tool originally written by "Gordon Lyon". NmapFE is the GUI(Graphical user interface) based tool originally written by "Zach Smith" which was later replaced with Zenmap which is also a GUI based on UMIT, developed by "Adriano Monteiro Marques".To accomplish its goal, Nmap sends specially crafted packets to the target host(s) and then analyses the responses that it receives from the hosts(s). FEATURES  All the hosts present in the network along with their IP addresses can be discovered. Scans all the ports and give information about all the open and closed ports along with the port numbers. Determines the operating system of the hosts. Determines the application name and version number of remote devices. Finding and exploitin...