Most reliable remote desktop / VNC for Windows

Possible Duplicate:
What's the best Remote Desktop Application?

I would like to leave a solution on a friends Windows (XP/7) so I can easily help her remotely from my home (With a confirmation from her).

I am mostly concerned about reaching it from the Internet.

Ideally I would like to be able to initiate a session to the PC I want to get in on.

Answer

Window RDC won't work if the remote machine is Home Edition (XP and possibly W7 but I'm not sure in this case). With Windows RDC, you'll need something like DynDNS to reach her public IP.

With VNC, team viewer or other software like those you don't need to reach her public IP so you don't need DynDNS as the server in her machine will give an access code you can use directly without using her IP.

Another possibility (more complicated but with more possibilities, depending on what kind of help you need to provide) is to make a VPN with server in your machine and she connects when she needs help or server in her machine and she activates it only when she needs help and you can use any remote connection software you want as if you were local (including mounting/sharing easily their disks or printers in your machine). In this case, Windows RDC will work without DynDNS but you'll need DynDNS for the VPN server.

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