- #HOW TO FIND MY MAC ADDRESS WINDOWS VISTA WINDOWS 10#
- #HOW TO FIND MY MAC ADDRESS WINDOWS VISTA PLUS#
PS C:\Users\Administrator> ipconfig /allĭescription. You can see that the MAC address is 00-0A-12-34-56-78 and therefore if PC1 uses EUI-64 to generate a link-local address, it should have been fe80::20a:12ff:fe34:5678.
#HOW TO FIND MY MAC ADDRESS WINDOWS VISTA WINDOWS 10#
Let's look at part of the output of ipconfig /all command that displays the Physical address and the Link-local address of a Windows 10 host. After Windows Vista, this feature is enabled by default, so wherever a Windows host generates an IPv6 address with SLAAC, it always uses a Random Interface ID.įigure 1. How Windows 10 creates a link-local address Randomize Identifiers feature has been introduced as a part of the privacy extension for SLAAC (Stateless Address Auto-configuration). Let's start by looking at what the first term is. This can be easily exploited in many different ways, for example, websites and apps associating different IPv6 addresses to a particular device or user.Ĭompanies realized that and introduced two concepts that help to improve user's privacy - Random Interface Identifiers and Temporary IPv6 addresses. The user can not connect anonymously to any network if someone knows the EUI-64 interface identifier of his laptop. 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.
#HOW TO FIND MY MAC ADDRESS WINDOWS VISTA PLUS#
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).