It has been a year since the last Nmap stable release and six months since development version (5.3DC1) of this powerful network scanner.
In this release the Nmap Scripting Engine(NSE) has been enhanced to expand up the protocol stack and take network discovery to the next level. Nmap 5.50 can now query all sorts of application protocols, including web servers, databases, DNS servers, FTP, and even Gopher servers!
This version has a brute forcing engine and supports network broadcast script in addition to two new script scanning phases known as prerule and postrule. It supports Nping with an innovative new echo mode and its developers added 636 OS fingerprints and 1,037 version detection signatures to Nmap since 5.21, bringing the totals to 2,982 and 7,319.
Nmap 5.50 source code as well as binary packages for Linux, Mac, and Windows are now available at:
More information about this release is available here.