Introduction

Nmap (Network Mapper) is a powerful open source command-line tool used for network exploration and security auditing. It is used to discover hosts and services on a computer network, and to gain information about the operating systems and services running on those hosts. Nmap can be used to scan a single host or a range of hosts, and can be used to detect open ports, running services, and the operating system of the target host. It can also be used to detect security vulnerabilities and to perform security audits. Nmap is a versatile tool that can be used for a variety of tasks, from basic network exploration to advanced security auditing.

Examples

Nmap (Network Mapper) is a free and open-source network scanner created by Gordon Lyon (also known by his pseudonym Fyodor Vaskovich). Nmap is used to discover hosts and services on a computer network by sending packets and analyzing the responses. It can be used to identify open ports, running services, operating systems, firewalls, and more.

Syntax: nmap [options] target

Example: nmap -sV 192.168.1.1

This command will scan the target IP address (192.168.1.1) for open ports and running services. The -sV option will attempt to determine the version of the services running on the target.

Nmap Linux Command

Nmap is a powerful network scanning tool used to discover hosts and services on a computer network. It is available for Linux, Windows, and Mac OS X. Nmap is used to scan networks for security purposes, such as finding open ports, detecting operating systems, and detecting services running on the network.

How to Use Nmap

Using Nmap is easy. All you need to do is open a terminal window and type in the command “nmap” followed by the IP address or hostname of the target system. For example, to scan a system with the IP address 192.168.1.1, you would type in the following command:

nmap 192.168.1.1

This will scan the system for open ports and services. You can also use Nmap to scan a range of IP addresses or a subnet. For example, to scan a range of IP addresses from 192.168.1.1 to 192.168.1.254, you would type in the following command:

nmap 192.168.1.1-254

You can also use Nmap to scan for specific services. For example, to scan for web servers, you would type in the following command:

nmap -sV -p 80 192.168.1.1

This will scan the system for web servers running on port 80. You can also use Nmap to scan for specific operating systems. For example, to scan for Linux systems, you would type in the following command:

nmap -O 192.168.1.1

Conclusion

Nmap is a powerful network scanning tool that can be used to discover hosts and services on a computer network. It is available for Linux, Windows, and Mac OS X. Nmap can be used to scan networks for security purposes, such as finding open ports, detecting operating systems, and detecting services running on the network.