how to find my mac address windows vista

You can clearly see that this creates an opportunity to track the user, because wherever he goes and to whichever network he connects, the second half of the globally unique IPv6 address his laptop generates is always the same. Well, the user's laptop will generate a global unicast address Y:Y:Y:Y:EUI-64, if the user connects to a network Z:Z:Z:Z::/64 it will get IPv6 address Z:Z:Z:Z::EUI-64 and so on. Let's say the user goes to another place and connects to another IPv6 network with a global prefix Y:Y:Y:Y::/64. Via SLAAC, the user's laptop will generate a globally unique address X:X:X:X:EUI-64. With the rise of network security, this was found to be a security vulnerability because an IPv6 address can be easily tied to a MAC address, which uniquely identifies physical equipment.įor example, imagine a user with a laptop connecting to an IPv6 network with global prefix X:X:X:X::/64. Globally unique addresses and Link-local ones were created using the segment's prefix plus the EUI-64 identifier which is generated from the physical address of the host.

Prior to Windows Vista and Windows Server 2008, Windows hosts used only MAC addresses to create Interface Identifiers (EUI-64).

How to find my mac address windows vista