Nmap version detection rocks

Monday, 13 October 2003, 3:36 PM EST

Most people have heard of Nmap, the ubiquitous portscanner and more. Recently, a new version of Nmap was released with a new and frequently requested feature - version scanning.

Nmap-3.45 and later have the ability to test out open ports and discover what version of software is running. The older versions could only tell you what port was open, and what that port is traditionally used for.

These non-standard setups are more common than you might think, but old Nmap results would only tell you that port 80 was likely HTTP, and wouldn't let you know if something else were listening on that port. Other tools, such as Nmap+v, or amap, were typically used to enumerate what service was actually listening on that port.

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