I was taking a class from this Cisco security expert, and he relayed to us something i didn't know and I thought it was pretty cool, I don't have much expertise in VPNs But this guy said that you can sniff on the external Lan just by useing a specialy crafted packet. He said that VPN offer no security what so ever, all they provide is Buisness Mangement. Anyway thought that was interesting.
linuxcomando