Stateful flow of network packets within a packet parsing...

Details Stateful flow of network packets within a packet parsing... Stateful flow of network packets within a packet parsing...

2011-06-07

2011-06-07

Ryman, Daniel J (Department: 2466)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C709S227000, C726S001000, C726S003000

Reexamination Certificate

active

07957378

ABSTRACT:
The present invention provides a packet processing device and method. A parsing processor provides instruction-driven content inspection of network packets at 10-Gbps and above with a parsing engine that executes parsing instructions. A flow state unit maintains statefulness of packet flows to allow content inspection across several related network packets. A state-graph unit traces state-graph nodes to keyword indications and/or parsing instructions. The parsing instructions can be derived from a high-level application to emulate user-friendly parsing logic. The parsing processor sends parsed packets to a network processor unit for further processing.

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PCT International Search Report and Written Opinion, PCT/US05/13191, Dec. 18, 2006, 10 pages.

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