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TCP connect() scanning [-sT] and SYN scanning (also known as half-open, or stealth scanning) [-sS] are the two most common scan types in Nmap.

  • Download the installer.
  • Run the installer.
  • Open NMap/Zenmap.
  • Enter the target address.
  • Download the installer.
  • Run the installer.
  • Open NMap/Zenmap.
  • Enter the target address.
  • Choose a profile.
  • Click Scan.
  • Review the results.
  • Choose a profile.
  • Click Scan.
  • Review the results.
  • #BBD0E0 »

    A method of discovering whether ports on a network are open and could be receiving or delivering data is known as port scanning. It's also a method of sending packets to certain ports on a host and analysing the answers to find flaws.

    Nmap offers multiple scanning methods, each with its own strengths and weaknesses. There are three main types of scans:

    • Host discovery scans rely on sending TCP packets to every IP address in the target range.
    • Service discovery scans use ARP requests to determine which IP addresses are reachable by the target's gateway.
    • OS detection scans send ICMP echo requests to the target IP addresses in order to determine what operating system is running on each host.

    Nmap is a network traffic scanning tool that improves on earlier network auditing tools to perform speedy and thorough scans of network traffic. It operates by identifying active hosts and IPs on a network using IP packets, then analysing these packets to offer information on each host and IP, as well as the operating systems they are running.

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