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Recommendation of a free port scanning program

Posted on 2009-07-02
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Last Modified: 2012-05-07
Hi!

I am in search of a free port scanning program that will give me information on all PC's connected to a network.  The information that I really need from the scan is the operating system type installed on each scanned PC.

Thanks
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Question by:cburn32
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by:amichaell
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I like NMAP.  There is a *nix and Windows version.  The Windows version has a GUI.
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rcflyr earned 125 total points
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I second nmap:

nmap -O xxx.xxx.xxx.xxx

will perform a port scan as well as OS detection
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