Method and device for recognizing layer protocol
An identification method and identification device technology, applied in the field of communication, can solve problems such as inaccurate protocol identification, and achieve the effect of improving identification accuracy and accurate identification technology
Active Publication Date: 2012-07-04
NANJING ZHONGXING SOFTWARE
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[0006] The purpose of the present invention is to provide a layered protocol identification method and device, which solves the technical problem of inaccurate protocol identification through the delayed identification mechanism of the layered protocol
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[0034] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0035] image 3 Shows the flow chart of the identification method of the layered protocol provided by the present invention, such as image 3 As shown, the specific implementation steps are as follows:
[0036] S301: The matching engine receives the message;
[0037] S302: Match the received message with a regular expression, if it matches, get the application layer protocol to which the message belongs, and execute S303, otherwise, execute S304;
[0038] S303: Utilize the layered relationship of the application layer protocol to perform application layer protocol determination processing, determine whether the application layer protocol has an upper la...
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The invention discloses a method and a device for recognizing a layer protocol, which include that a matching engine conducts canonical expression matching processing on received messages to obtain application layer protocol belonging to the messages. Application layer protocol judging processing is conducted by means of application layer protocol layer relationship and whether an upper layer application protocol exists in the application layer protocol is judged. When the upper layer application protocol does not exist, protocol classifying processing is conducted, and the messages are classified as the application layer protocol. When the upper layer application protocol exists, recognition postponing is conducted, the canonical expression matching processing and the application layer protocol judging processing are conducted on following messages till the protocol classification processing is conducted on the following messages. The method and the device for recognizing the layer protocol use a mechanism of recognition postponing, network flow is classified as the upper layer application protocol, and recognition precision of the layer protocol is improved.
Description
technical field [0001] The invention relates to a protocol identification technology in the communication field, in particular to an identification technology of an application layer layered protocol. Background technique [0002] The purpose of protocol identification is to identify the type of application layer protocol used in network transmission. Accurate identification of application layer protocol types in network transmission is of great significance for improving network service quality, intrusion detection, bandwidth control, and billing management. [0003] The traditional protocol identification is realized based on the port mapping mechanism, which can achieve a higher rate, but with the development of the network, its defects are becoming more and more obvious. At present, a large number of protocols use dynamic port communication. The emergence of such protocols makes the traditional protocol identification based on the port mapping mechanism ineffective. Wi...
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IPC IPC(8): H04L29/06H04L29/08
Inventor 朱娜吴锦花刘晓波
Owner NANJING ZHONGXING SOFTWARE