WO2007027508A3 - Method and system for reassembling packets prior to searching - Google Patents

Method and system for reassembling packets prior to searching Download PDF

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Publication number
WO2007027508A3
WO2007027508A3 PCT/US2006/033123 US2006033123W WO2007027508A3 WO 2007027508 A3 WO2007027508 A3 WO 2007027508A3 US 2006033123 W US2006033123 W US 2006033123W WO 2007027508 A3 WO2007027508 A3 WO 2007027508A3
Authority
WO
WIPO (PCT)
Prior art keywords
data
data packets
patterns
consecutive
payloads
Prior art date
Application number
PCT/US2006/033123
Other languages
French (fr)
Other versions
WO2007027508A2 (en
Inventor
Indra Gunawan Harijono
Ho Jae Lee
Uooyeol Yoon
Original Assignee
Winnow Technologies Inc
Indra Gunawan Harijono
Ho Jae Lee
Uooyeol Yoon
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Winnow Technologies Inc, Indra Gunawan Harijono, Ho Jae Lee, Uooyeol Yoon filed Critical Winnow Technologies Inc
Priority to JP2008529120A priority Critical patent/JP2009510815A/en
Publication of WO2007027508A2 publication Critical patent/WO2007027508A2/en
Publication of WO2007027508A3 publication Critical patent/WO2007027508A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
    • H04L63/1408—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic by monitoring network traffic
    • H04L63/1416—Event detection, e.g. attack signature detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9084—Reactions to storage capacity overflow
    • H04L49/9089—Reactions to storage capacity overflow replacing packets in a storage arrangement, e.g. pushout
    • H04L49/9094—Arrangements for simultaneous transmit and receive, e.g. simultaneous reading/writing from/to the storage element
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S370/00—Multiplex communications
    • Y10S370/901—Wide area network
    • Y10S370/902—Packet switching

Abstract

A method and system (Fig. 2) for inspecting a data packet stream (32) in a computer network for patterns that fall across data packet boundaries is disclosed. This includes determining if two or more data packets are consecutive in the data packet stream (32), combining data payloads from the consecutive data packets, and analyzing the combined data payloads from the consecutive data packets for a plurality of patterns of character combinations, wherein the maximum length of the combined data payloads is one less than the maximum number of characters for a pattern having a longest length of the plurality of patterns of character combinations. This can include a content searching engine and/or a regular expression engine. There are optional aspects to return data packets to an outgoing data stream based on predetermined criteria and if the data packets are in the system (Fig. 2) for over a predetermined time period.
PCT/US2006/033123 2005-08-29 2006-08-24 Method and system for reassembling packets prior to searching WO2007027508A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008529120A JP2009510815A (en) 2005-08-29 2006-08-24 Method and system for reassembling packets before search

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/214,384 2005-08-29
US11/214,384 US7486673B2 (en) 2005-08-29 2005-08-29 Method and system for reassembling packets prior to searching

Publications (2)

Publication Number Publication Date
WO2007027508A2 WO2007027508A2 (en) 2007-03-08
WO2007027508A3 true WO2007027508A3 (en) 2009-04-16

Family

ID=37803939

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/033123 WO2007027508A2 (en) 2005-08-29 2006-08-24 Method and system for reassembling packets prior to searching

Country Status (3)

Country Link
US (1) US7486673B2 (en)
JP (1) JP2009510815A (en)
WO (1) WO2007027508A2 (en)

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Also Published As

Publication number Publication date
WO2007027508A2 (en) 2007-03-08
US7486673B2 (en) 2009-02-03
US20070047457A1 (en) 2007-03-01
JP2009510815A (en) 2009-03-12

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