[118840] in Cypherpunks
Re: Unplugged! The biggest hack in history (fwd)
daemon@ATHENA.MIT.EDU (Jim Choate)
Fri Oct 8 21:50:13 1999
From: Jim Choate <ravage@einstein.ssz.com>
Message-Id: <199910090138.UAA07313@einstein.ssz.com>
To: cypherpunks@einstein.ssz.com
Date: Fri, 8 Oct 1999 20:38:58 -0500 (CDT)
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Reply-To: Jim Choate <ravage@einstein.ssz.com>
----- Forwarded message from Dave Emery -----
Date: Fri, 8 Oct 1999 21:03:20 -0400
From: Dave Emery <die@die.com>
Subject: CDR: Re: Unplugged! The biggest hack in history
This is readily detectable by looking at the connection information
the modem maintains and looking at the ping time over the connection.
by the right AT command. Surely if you are connecting to Boston from
SF, you don't expect the modem round trip delay to be 2 ms... Also the
----- End of forwarded message from Dave Emery -----
And what AT command might that be?
Baloney. The modem itself won't care about anything other than the
connection from itself to the telephone switch. The noise cancellation isn't
from modem to modem but rather modem to switch (it aggregates the modem in
the other end at the same time). Once it hits the switch it's digitized
anyway. There's not a damn thing that would keep somebody from doing a
Fourier on the digitized (or analog signal for that matter if it was a
source tap) signal (ie a 'tee') on the MITM laptop as described. It wouldn't
be real-time but it'd be close.
My average ISDN ping time is 2.7mS from my house to my provider who is less
than 10 miles away. ISDN is a tad faster than a modem. I've seen ping times
in the 20 - 100mS range for modems quite often (I have two seperate dial-in
lines on my system, US Robotics Sportster 56k & Sportster 33k).
____________________________________________________________________
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The Armadillo Group ,::////;::-. James Choate
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