Introducing NmapNmap is a tool used for determining the hosts that are running and what services the hosts are running. Nmap can be a valuable diagnostic tool for network administrators while they can be also a potent reconnaissance tool for the Black-hat community (Hackers, Crackers, Script Kiddies, etc). Once the network is charted out using tools like Lan MapShot, the Nmap can be used to determine the type of services and hosts running in the network. Primary Uses of Nmap1.Determining open ports and services running in an host: 2.Determine the Operating System running on a host 3.Alter the source IP of the scan (One way is to use –S option)1Nmap using Redhat 9.0In the Cyberdefense lab scenario, it is recommended that Nmap be run from a Redhat Linux machine. Nmap can be run from a terminal using command lines or it can be run using a front end. Using the front end is more user-friendly. It also automatically shows the command being used. More information on Nmap can be obtained from the manual pages of Redhat using the command ‘man nmap’. 1This feature needs to be studied further
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