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Data packet filtering implementation method and apparatus

An implementation method and data packet technology, applied in the field of data packet filtering, can solve problems such as low efficiency of data packets

Active Publication Date: 2017-05-10
杭州迪普信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present application provides a method and device for implementing data packet filtering to solve the problem of low efficiency of data packet filtering in the related art

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  • Data packet filtering implementation method and apparatus
  • Data packet filtering implementation method and apparatus
  • Data packet filtering implementation method and apparatus

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Embodiment Construction

[0018] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0019] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The invention provides a data packet filtering implementation method and apparatus, applied to a network device. The method comprises the following steps: when a data packet sent to a local area network is received, judging whether a filtering rule table corresponding to a destination IP address of the data packet is stored locally; if the filtering rule table is stored locally, searching a corresponding filtering rule in the filtering rule table based on a source IP address, a source port, a destination port and a transport layer protocol of the data packet; and filtering the data packet according to the searched filtering rule. The technical scheme provided by the invention can greatly improve the data packet filtering efficiency.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a method and device for implementing data packet filtering. Background technique [0002] Network security products such as firewalls are generally deployed at the entrance and exit of the LAN, which can filter the data packets sent to the inside of the LAN to avoid some attacks from external devices of the LAN and protect the security of the internal devices of the LAN; The data packets are filtered to restrict the internal devices of the LAN from accessing some external devices of the LAN and realize network isolation. In related technologies, the efficiency of data packet filtering is generally improved by optimizing the data packet filtering algorithm. However, the optimized algorithm may not be applicable to all data packet filtering rules, the scope of application is small, and the improvement of data packet filtering efficiency is also small. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L63/0236H04L63/0263
Inventor 谭天
Owner 杭州迪普信息技术有限公司
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