Nmap is probably the most powerful network security scanner. You can use this nifty Open Source tool for security auditing, network inventory, and network monitoring. Nmap is a command line tool, but Zenmap allows you to use it with a graphical user interface. The recently released version 4.5 has more detection signatures and many more new features. Windows admins should read this first and then download the binaries here.

Zenmap

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Nmap + Zenmap

1 Comment
  1. Vinoth 13 years ago

    Always use command line if you want to master that tool.

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