Network Port Scanner Tool Nmap

Replace the ip address with the ip address of the system you re testing.
Network port scanner tool nmap. Nmap is a very effective port scanner known as the de facto tool for finding open ports and services. Nmap stands for network mapper it is the most popular network discovery and port scanner in the history. Nmap performs several phases in order to achieve its purpose. This is the basic format for nmap and it will return information about the ports on that system.
In addition to scanning by ip address you can also use the following commands to specify a target. How nmap scanner works. Download open source software for linux windows unix freebsd etc. Using nmap is covered in the reference guide and don t forget to read the other available documentation particularly the new book nmap network scanning.
Why you need this network mapper while there is a wealth of monitoring tools available to network administrators for port scanning and network mapping nmap is the de facto standard. It s a free and open source application used by system administrators devops and network engineers for security auditing on local and remote networks. Nmap host discovery the first phase of a port scan is host discovery here the scanner attempts to check if the target host is live before actually probing for open ports.