Network protocol identification method and device

The invention discloses a network protocol identification method which comprises the following steps: prestoring: storing feature character information of the network protocol into a TCAM (ternary content addressable memory), and storing a return value corresponding to the feature character informat...

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Bibliographic Details
Main Authors LIANG LIHUA, WANG RUI, ZHAO YANBO, YE JUN, WANG ZENGLI, ZHOU ZHIXIONG
Format Patent
LanguageChinese
English
Published 21.09.2011
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:The invention discloses a network protocol identification method which comprises the following steps: prestoring: storing feature character information of the network protocol into a TCAM (ternary content addressable memory), and storing a return value corresponding to the feature character information in the TCAM into an RAM (random-access memory); and matching: acquiring a data packet to be identified from the Internet, extracting packet header data required by primary data matching from the data packet to be identified, matching the packet header data with the feature character information in the TCAM, acquiring the corresponding return value from the RAM after determining the feature character information matched with the data packet to be identified, and generating a network protocol identification result according to the determined feature character information and the corresponding return value. The invention is applicable to identifying various types of protocols on different levels.
Bibliography:Application Number: CN2011192274