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.

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Michael Pietroforte

Michael Pietroforte is the founder and editor of 4sysops. He is a Microsoft Most Valuable Professional (MVP) with more than 30 years of experience in IT management and system administration.
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Nmap + Zenmap

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1 Comment
  1. avatar
    Vinoth 8 years ago

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


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