[18581] in cryptography@c2.net mail archive
NSA patents "Method for geolocating logical network addresses"
daemon@ATHENA.MIT.EDU (Perry E. Metzger)
Wed Sep 28 08:17:14 2005
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To: cryptography@metzdowd.com
From: "Perry E. Metzger" <perry@piermont.com>
Date: Wed, 28 Sep 2005 08:12:20 -0400
http://cryptome.org/nsa-6947978.htm
Method for geolocating logical network addresses
Abstract
Method for geolocating logical network addresses on electronically
switched dynamic communications networks, such as the Internet,
using the time latency of communications to and from the logical
network address to determine its location. Minimum round-trip
communications latency is measured between numerous stations on
the network and known network addressed equipment to form a
network latency topology map. Minimum round-trip communications
latency is also measured between the stations and the logical
network address to be geolocated. The resulting set of minimum
round-trip communications latencies is then correlated with the
network latency topology map to determine the location of the
network address to be geolocated.
--
Perry E. Metzger perry@piermont.com
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