jaxjaguar
join:2001-05-29
Northridge, CA
| reply to ronpin
Re: Anonymously Track a PC Anywhere on Net
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. |
|
Shamayim
I already have a Messiah.
Premium
join:2002-09-23 | reply to tquade
It's crackers to slip a rozzer the dropsy in snide.
(I don't know what the hell I'm talking about either.)
--
"tick...tick...tick..." »www.jtf.org/ |
|
tquade
join:2000-10-14
Regina, SK | reply to teambnet
Concur, although, it could be done with a laplace transform, a bit of convolution and a sprinkling of negative phlogiston.
Ted |
|
teambnet
Team B Group
Premium
join:2003-05-06
Chicago, IL
| reply to ronpin
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. |
|
Fraoch
join:2003-08-01
London, ON
| reply to sman83
said by sman83  :From how I read is it possible to just turn off timestamps in the tcp/ip? Then no more detection Hmm, yeah, hopefully that will do it!:) |
|
sman83
join:2004-11-09
Urbana, IL | reply to Fraoch
From how I read is it possible to just turn off timestamps in the tcp/ip? Then no more detection |
|
ronpin
Imagine Reality
join:2002-12-06
Nirvana
 ·AT&T Southwest
| reply to Fraoch
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?
--
Lord protect me from your followers |
|
Fraoch
join:2003-08-01
London, ON
| reply to Fraoch
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. |
|
Fraoch
join:2003-08-01
London, ON | Oh, very nice. I'm sure ISPs would love to know how many devices are connected to their line so they could increase charges accordingly.
It could have some good security benefits but it sure opens the doorway to abuse. |
|
