http://insecure.org/nmap/download.htmlNmap is an open source security scanning aplication designed for testing your networks security, originally written for Linux but now available for windows Macintosh ( Mac OS X ), Nmap is the tool of choice for most security professionals.
available for download at the link above, Nmap also comes packaged in the Austrami Linux CD.
http://darksat.x47.net/topic/9.0.htmlSo if you want to run it like a pro, download austrami, if you want to run it from windows, use the top link.