Pattern matching in a network flow across multiple packets

Details Pattern matching in a network flow across multiple packets Pattern matching in a network flow across multiple packets

2011-01-18

2011-01-18

Kumar, Pankaj (Department: 2467)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S389000, C370S395310, C370S351000, C726S013000, C726S014000, C726S018000

Reexamination Certificate

active

07873054

ABSTRACT:
Pattern matching for a network flow includes storing a representation of the pattern. The representation of the pattern includes hash values representing blocks of data in the pattern. Hash values are calculated for blocks of data in the network flow. The blocks of data are spread across multiple packets in the network flow. The calculated hash values for the blocks of data in the network flow are compared to the hash values in the representation of the pattern to detect the pattern in the network flow.

REFERENCES:
patent: 6560599 (2003-05-01), Boa et al.
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patent: 2006/0020796 (2006-01-01), Aura et al.
patent: 2006/0193159 (2006-08-01), Tan et al.
patent: 2006/0195698 (2006-08-01), Pinkerton et al.
patent: 2007/0206637 (2007-09-01), Miller et al.
patent: 2008/0235772 (2008-09-01), Janzen

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