Using Remote Assistance Across a NAT
Remote Assistance has been significantly enhanced and improved in Windows Vista to allow novice users to request (and expert users to offer) assistance over corporate networks or even the Internet. If you want to learn more about it, you can read the chapter from the Vista Resource Kit on this topic which is reproduced here with permission from Microsoft.
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Now back to talking about Remote Assistance in Vista…
Did you know that you can use Remote Assistance to help users when their computers are located behind a router configured to use Network Address Translation (NAT)? There are limitations on how this can work however. Specifically, if your NAT supports Universal Plug and Play (UPnP) then Remote Assistance should be able to obtain a global IPv4 address that can enable anyone to connect to your computer and help you with your problem. And if your NAT supports Teredo/IPv6, then a Remote Assistance expert who is also running Vista and is Teredo-enabled should be able to connect to your computer and help you.
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