The essence of all network programs is based on ports. More interesting is how Nmap finds out what services are running on the machine. The simplest-case is to define a target IP-address or host-name for scanning. Computers also respond in a certain way to certain network packets, the utility simply sends the necessary packets and looks at which hosts sent the answer.Įvery-thing on the command_line of Nmap that is not an option is treated as a target host-specification. Nmap takes a slightly different approach. You are required to send a ping request to the computer, and if it responds, then we believe that it is connected. Ping protocol can determine whether a computer is connected to the network or not. And ping protocol is support by each computer. In computer Lan networks, all connected devices have their own ip address. The can get the extra advantages using its scripting language, which allows administrators to automate many actions.

Information about the TCP and USP ports.

It can find the following common information about the clients

Its helps system administrators to finds the list of clients connected to the network. Nmap is created by Gordon Lyon and a very popular open source network scanner for both Windows and Linux. It use different scanning methods it offers and the various options. Nmap is an interesting and powerful Linux tool that can help us discover information about computers on the network.

A complete and details list of Nmap commands or Cheat Sheet for different types of port scanning. This article is about the Nmap commands in Linux.

What is zenmap typically used for