I am trying to make an application which can share an application simultaneously between different PCs the PCs might not be on same network? (Like Netmeeting Application Sharing or Messenger Application Sharing). The PCs can be behind NAT so i need a solution to connect PCs behind NAT as well. How do i connect a PC behind NAT (VPN, Tunnelling etc) any code samples would be great.
VB.NET or C# sample codes would do.
Any help would be highly appriciated.
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