Researcher develops technique to track PCs behind firewalls

" The research, by Tadayoshi Kohno, concerns “exploiting small, microscopic deviations in device hardware: clock skews,” which are transmitted in outgoing packets, even when a computer is behind a firewall."

http://www.engadget.com/entry/1234000273034873/

 

So what are we going to need now a antispyware card that fits in a PCI slot and gives off random microscopic deviations to through the hardware trackers off?

 

This is the part where hardware firewalls come in handy...

 

Senior Member Nadirah, if you read the link it works around NAT and firewalls using passive and "Semipassive" fingerprinting methods.

I skimed thru the actual paper , it's quite interesting, if you read between the lines there is actually a way to defend against this (at least against TCP timestamps/) if you are on Windows XP and/or Win2k.