nmap v6.01 Released

Nmap (“Network Mapper”) is a free and open source (license) utility for network discovery and security auditing. Many systems and network administrators also find it useful for network inventory, managing service upgrade schedules, monitoring host or service uptime, and many other tasks. Nmap uses raw IP packets in novel ways to determine what hosts are available on the network, what services (application name and version) those hosts are offering, what operating systems (and OS versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics. It was designed to rapidly scan large networks, but works fine against single hosts. Nmap runs on all major computer operating systems, and official binary packages are available for Linux, Windows, and Mac OS X. In addition to the classic command-line Nmap executable, the Nmap suite includes an advanced GUI and results viewer (Zenmap), a flexible data transfer, redirection, and debugging tool (Ncat), a utility for comparing scan results (Ndiff), and a packet generation and response analysis tool (Nping)

The Nmap Project is pleased to announce the immediate, free availability of the Nmap Security Scanner version 6.00 from http://nmap.org/. It is the product of almost three years of work, 3,924 code commits, and more than a dozen point releases since the big Nmap 5 release in July 2009. Nmap 6 includes a more powerful Nmap Scripting Engine, 289 new scripts, better web scanning, full IPv6 support, the Nping packet prober, faster scans, and much more! We recommend that all current users upgrade.

Changelog v6.01

  • [Zenmap] Fixed a hang that would occur on Mac OS X 10.7. A symptom of the hang was this message in the system console: “Couldn’t recognize the image file format for file ‘/Applications/Zenmap.app/Contents/MacOS/../Resources/share/zenmap/pixmaps/radialnet/padlock.png'”. [David Fifield]
  • [Zenmap] Fixed a crash that happened when activating the host filter. File “zenmapCore\SearchResult.pyo”, line 155, in match_os  KeyError: ‘osmatches’ [jah]
  • Fixed an error that occurred when scanning certain addresses like on Windows XP: get_srcaddr: can’t connect socket: The requested address is not valid in its context. nexthost: failed to determine route to [David Fifield]


  • Fixed a bug that caused Nmap to fail to find any network interface when at least one of them is in the monitor mode. The fix was to define the ARP_HRD_IEEE80211_RADIOTAP 802.11 radiotap header identifier in the libdnet-stripped code. Network interfaces that are in this mode are used by radiotap for 802.11 frame injection and reception. The bug was reported by Tom Eichstaedt and Henri Doreau. http://seclists.org/nmap-dev/2012/q2/449 http://seclists.org/nmap-dev/2012/q2/478 [Djalal Harouni, Henri Doreau]
  • Fixed the greppable output of hosts that time-out (when –host-timeout was used and the host timed-out after something was received from that host). This issue was reported by Matthew Morgan. [jah]
  • [Zenmap] Updated the version of Python used to build the Windows release from 2.7.1 to 2.7.3 to remove a false-positive security alarm flagged by tools such as Secunia PSI. There was a minor vulnerability in certain Python27.dll web functionality (which Nmap doesn’t use anyway) and Secunia was flagging all software which includes that version of Python27.dll. This update should prevent the false alarm.

Read full changelog: here

Download Nmap v6.01


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