Information security – Access control or authentication – Network
Reexamination Certificate
2006-12-07
2010-06-08
Chai, Longbit (Department: 2431)
Information security
Access control or authentication
Network
C726S023000, C726S014000, C726S015000, C713S153000, C713S154000, C713S155000
Reexamination Certificate
active
07735128
ABSTRACT:
A method of storing a pattern matching policy and a method of controlling an alert message are provided. The method includes (a) generating a content structure as a sub-structure of a header combination structure of a stored traffic pattern which is a policy to be newly applied to a pattern matching apparatus; (b) determining whether a content of the stored traffic pattern is identical to a content of an original traffic pattern stored in advance in the pattern matching apparatus; (c) allocating a content index of the content of the original traffic pattern to the content of the stored traffic pattern if the content of the stored traffic pattern is identical to the content of the original traffic pattern; and (d) determining whether a header combination structure of the original traffic pattern comprises only one content structure or more than one content structure and allocating a header index of the header combination structure of the stored traffic pattern to the header combination structure of the original traffic pattern if the header combination structure of the original traffic pattern is found to comprise only one content structure. Accordingly, it is possible to efficiently use hardware memories with limited storage capacities and effectively perform a pattern matching function.
REFERENCES:
patent: 1020030049078 (2003-06-01), None
patent: 1020040069315 (2004-08-01), None
patent: WO03/052631 (2003-06-01), None
“Towards Faster String Matching for Intrusion Detection or Exceeding the Speed of Snort.” C. Jason Coit et al. © 2001 IEEE. pp. 367-373.
“Specialized Hardware for Deep Network Packet Filtering.” Young H. Cho et al. © Springer-Verlag Berlin Heidelberg 2002. pp. 452-461.
Baik Kwang Ho
Jang Jong Soo
Kim Byoung Koo
Oh Jin Tae
Sohn Sung Won
Chai Longbit
Electronics and Telecommunications Research Institute
Ladas & Parry LLP
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