AWSPS features a set of tools for assessment of network security including a TCP connect scanning engine, with adjustable maximum number of simultaneously opened ports and no-connection time-out adjustment.
Available for download is a fully functional evaluation version for Windows 95, 98, Me, NT 4.0, 2000 or XP. The NetBIOS scanner feature is only available in the Professional version, as well as Syn Scan IP spoofing.