Method and device for filtering data packets

A filtering method and data packet technology, applied in the field of communication, can solve the problems of filtering processing and slow data packet filtering, and achieve the effect of saving system overhead and improving system processing efficiency

Inactive Publication Date: 2010-07-21
OPEN INVENTION NEWTORK LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Considering that there is data packet filtering speed relatively slow in the related art, can't effectively and correctly filter the problem of a plurality of IP fragmentation packets based on the same IP data message and propose the present invention, for this reason, the main purpose of the present invention The purpose is to provide an improved data packet filtering solution to solve at least one of the above-mentioned problems in related technologies

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  • Method and device for filtering data packets
  • Method and device for filtering data packets
  • Method and device for filtering data packets

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Embodiment Construction

[0031] Functional Overview

[0032] Considering the problem of slow data packet filtering speed in the related art, based on the characteristics of the data flow, an improved data packet filtering scheme is proposed. In the embodiment of the present invention, multiple associated data packets (such as , based on the characteristics of the same keyword information in multiple data packets based on the flow or multiple IP fragmented data packets based on the same IP data packet), the first data packet in the associated multiple data packets is processed Matching, obtaining matching actions, and distributing the obtained matching actions to other data packets, thereby avoiding matching keyword information for all data packets, and improving the processing speed and processing efficiency of data packet filtering.

[0033] It should be noted that, if there is no conflict, the embodiments of the present invention and various features in the embodiments can be combined with each othe...

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Abstract

The invention discloses a method and a device for filtering data packets. The method comprises the following steps: receiving a plurality of related data packets, wherein each of the plurality of data packets carries a plurality of same key words; performing a matching operation on part or all of the key words in a first word packet in the plurality of the data packets to acquire a matching action; and according to the plurality of key words, configuring the matching action to the other data packets besides the first data packet in the plurality of data packets. In the method and the device for filtering the data packets, by performing the matching operation on the first data packet in the plurality of related data packets which contain the same key words, the acquired matching action is configured to other data packets which contain the same key words, and a data packet matching speed can be increased, so that the problem that the data packet filtering speed is slow in the related technique is solved, and system cost is saved and system processing efficiency is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data packet filtering method and device. Background technique [0002] In data network applications, data packet filtering is a common operation. For example, in a device with a firewall, it is necessary to scan the data packets entering the device, so that the data packets that meet the requirements pass through, and the data packets that do not meet the requirements are filtered. throw away. [0003] The core of data packet filtering technology is scanning (or called matching operation), that is, comparing the information (or called keywords) contained in the relevant fields of the data packet with the pre-established filtering rules. Describes the requirements that the information contained in the relevant fields should meet. The purpose of the comparison operation is to determine whether the information meets the requirements, and then perform relevant processing operatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L1/00G06F17/30
Inventor 蔺妍汪承研文海军孙卓海
Owner OPEN INVENTION NEWTORK LLC
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