Determining the presence of a pre-specified string in a message

Details Determining the presence of a pre-specified string in a message Determining the presence of a pre-specified string in a message

2007-09-06

2011-11-29

Ellis, Kevin (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C709S224000, C709S238000, C707SE17039, C711S216000, C711S217000, C711S218000

Reexamination Certificate

active

08069304

ABSTRACT:
A network device determines the presence of the pre-specified string in a message based on a sequence matching rule. A sequence represents non-contiguous portions of the message. A combination of content addressable memory, programmable processing units, and the programmable control unit may determine the presence of the pre-specified string in the message by comparing the non-contiguous portions of the message. Such an approach may reduce the computational resources required for searching the pre-specified string in the message.

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Dhamapurikar, S. et al. “Deep packet inspection using parallel bloom filters” Aug. 20-22, 2003, washington University in saint Louis, MO, USA, pp. 1-8.
Dhamapurikar, S. et al. “Deep packet inspection using parallel bloom filters” Aug. 20-22, 2003, Washington University in Saint Louis, MO, USA, Abstract, p. 1.

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