I tried to set this up on my iPod Touch 4th Gen. with iOS 5.1.1.
I used the PPTP option on the settings panel and filled it in with the right address.
When I try to turn on VPN, it gives me an error message saying : "you were disconnected by the communication device. Try reconnecting. If the problem continues, check your settings."
Am I getting this message because the iOS is not yet supported? Or is it a problem on my side?