What works for paypal? Obviously shared or known proxies don't work. But do private proxies work? What's your experience? The only way they can know the private proxy is a proxy (if the headers are properly adjusted) is via checking all the ports and seeing if there is a response, but if you set up the proxy so that ports don't respond like a server, and that the proxy only works from your ip address, then it should be undetectable right?