The TechNet Support WebCast: New features and functionality in PortQry 2.0 article contains:
"This Support WebCast discusses Portqry, a port scanning utility that is very useful for troubleshooting various network connectivity issues. Version 1.22 is included in Microsoft Windows Server 2003 Support Tools. Tim Rains, who developed PortQry version 2.0, discusses its new features and functionality.
This is a Level 200 session that was recorded January 9, 2004 and presented by Tim Rains.
Tim Rains is a Technical Lead on the Microsoft Product Support Services Security team. He has developed several utilities including PortQry, DNSLint, SPCheck, the NetBIOS Browsing Console, and NBLookup."