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Nmap

Nmap

(also Network Mapper)


Nmap definition

Nmap is a free, open-source tool network administrators use to map out the devices their systems are running, find open ports and available hosts, and identify security risks. It's a versatile tool that can help monitor single hosts or even vast networks with thousands of devices and subnetworks.

Nmap as a malicious tool

  • Port scanning is not illegal, but it allows cybercriminals to see open ports and use them to exploit vulnerabilities in the system.
  • To protect the network from malicious port scanning, network administrators can set up a firewall and configure it to only respond to requests from known clients.

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