Ramblings from another nerd on the grid
The Internet Connectivity Evaluation Tool checks your Internet router to see if it supports certain technologies. You can use this tool on a PC running either the Windows Vista or Windows XP operating system. If you're planning to run Windows Vista, this tool can verify whether your existing Internet router supports advanced features, such as improved download speeds and face-to-face collaboration using Windows Meeting Space.
The tool is intended to be run from a home network behind a home Internet (NAT) router. Running this tool from behind a corporate firewall or on operating systems other than those specified above won't produce accurate results. This tool requires administrator privileges to run.
The tests can require up to 10 minutes to complete and do not make any permanent changes to your router. For the most accurate results, your computer should be connected directly to your Internet router, using a wired connection.
Note Although it is unlikely, testing might interrupt your Internet connectivity or cause your router to stop responding. If you require uninterrupted Internet access at this time (for example, if you are in the middle of downloading a large file, bidding on a time-sensitive Internet auction, or playing an online game), you should wait and do this testing at another time.
A Brief Overview of the tool
The tool is downloaded and installed as an ActiveX Component and can be invoked through the tool specific web pages. It runs through 6 basic connectivity tests consisting of, basic ipv4 connectivity, NAT-type determination, Vista TCP options (ECN and WS), UPnP Support and Concurrent TCP streams.
The complete test should take about 10 minutes.
We recommend running this from a machine directly connected (via Ethernet) to your router at home.
Download @ http://www.microsoft.com/windows/using/tools/igd/default.mspx
[Note] : Be sure to check out the detailed report after it runs. Network nerds need only apply. :)