Is it possible to extract The IP of my PC when I'm connected to a VPN connection and surf internet?
By saying "IP of my PC" I mean the IP address of my system when I'm not connected to the VPN connection.
In general, is it possible for a website to determine whether I'm connected to a VPN connection or not when I'm visiting it? Does VPN connection cause additional data being sent or modify something in http header which is detectable?
Tell you the truth, I'm using VPN to connect to GoogleCode since it is banned for Iranian users. But even through a VPN connection from US, Google finds out that I'm connecting from Iran. So Google can find out about my location whether by determining my real IP address or maybe by my browser (Firefox4) when
geo.Enabled is set to true.