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Nmap: the Network Mapper - Free Security Scanner
Nmap is a free, open-source tool for network discovery and security auditing, helping you scan ports, find devices, and analyze network vulnerabilities.
Scan networks and find vulnerabilities for free
Nmap is a powerful, free, open-source tool designed for network discovery and security auditing. Whether you want to scan your own network, check for open ports, or identify what devices and services are running, Nmap makes it easy for both beginners and professionals. You can use it to quickly map out your network, manage service upgrades, and monitor uptime—all from your favorite operating system, since it works on Windows, Linux, Mac, and more.
Beyond the classic command-line tool, Nmap offers a suite of helpful utilities, including a graphical interface (Zenmap), a tool for comparing scan results (Ndiff), and a flexible data transfer utility (Ncat). This makes Nmap not just a scanner, but a complete toolkit for anyone interested in network security and management.
If you're looking to boost your network security, stay on top of vulnerabilities, or simply want to understand what's happening on your network, Nmap gives you the tools you need—all for free and with plenty of documentation to help you get started.
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