High-performance network content analysis platform

Electrical computers and digital processing systems: multicomput – Computer network managing – Computer network monitoring

Reexamination Certificate

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Details

C726S026000

Reexamination Certificate

active

07467202

ABSTRACT:
One implementation of a method reassembles complete client-server conversation streams, applies decoders and/or decompressors, and analyzes the resulting data stream using multi-dimensional content profiling and/or weighted keyword-in-context. The method may detect the extrusion of the data, for example, even if the data has been modified from its original form and/or document type. The decoders may also uncover hidden transport mechanisms such as, for example, e-mail attachments. The method may further detect unauthorized (e.g., rogue) encrypted sessions and stop data transfers deemed malicious. The method allows, for example, for building 2 Gbps (Full-Duplex)-capable extrusion prevention machines.

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patent: 2004/0103202 (2004-05-01), Hilderbrand et al.
patent: 2004/0128554 (2004-07-01), Maher, III et al.
patent: 2005/0039034 (2005-02-01), Doyle et al.
patent: 2007/0061276 (2007-03-01), Sato et al.
International Search Report, Issued Sep. 22, 2006.

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