NSA patents "Method for geolocating logical network addresses"

[Perry E. Metzger]

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 at piermont.com

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