Fraoch
join:2003-08-01
London, ON
| reply to Fraoch
Re: Anonymously Track a PC Anywhere on Net
Hmm, perhaps this may lead to utilities out there that will alter the clock settings of networking chips slightly.
I'm not talking massive overclocks, I'm talking very slight clock alterations.
I'm not even sure it's possible. Just an idea. |
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ronpin
Imagine Reality
join:2002-12-06
Nirvana
 ·AT&T Southwest
 ·Charter Pipeline
| From the cited PDF paper...
...and we show how one might use a Fourier transform on packet arrival times to infer a device’s clock skew. ...
They almost had me believing it. Packet arrival times have random influences that no "Fourier transform" could account for. This is bullshit -- the paper is a fraud -- but I"ll keep reading it just to make sure. Besides, I'm pretty sure that TCP does not waste 32 bits on a time stamp unless there is a real-time/ordering requirement (but that could have changed in the last 5 years since I dealt with it). ICMP request are mentioned -- but don't most router firewalls block those anyway?
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Lord protect me from your followers |
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teambnet
Team B Group
Premium
join:2003-05-06
Chicago, IL
| I agree: total BS. It would be impossible for a single deployed solution to parse traffic from a constantly evolving number of arrangements behind customers' public interfaces- especially if LAN side hacks appeared that were designed to overwhelm and not just obscure. |
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tquade
join:2000-10-14
Regina, SK | Concur, although, it could be done with a laplace transform, a bit of convolution and a sprinkling of negative phlogiston.
Ted |
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MoeDumb
"America Si, Obama No."
Premium
join:2002-09-23
Bronx, NY | It's crackers to slip a rozzer the dropsy in snide.
(I don't know what the hell I'm talking about either.)
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"tick...tick...tick..." »www.jtf.org/ |
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jaxjaguar
join:2001-05-29
Northridge, CA
| reply to ronpin
On the BS bandwagon myself. I'm no TCP protocol expert, but doesn't a NAT router change the time stamp when it NAT's the packet? And if it currently doesn't, I'm sure it's just a simple firmware change to add that feature and make the ISP's efforts worthless.
So there's nothing to worry about here. |
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