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A data filtering method and device

A filtering method and data technology, applied in the field of communication, can solve problems such as network instability

Active Publication Date: 2019-09-17
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the embodiments of the present invention is to provide a data filtering method to solve the problem of network instability caused by existing DDoS traffic attacks

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Embodiment Construction

[0023] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Generally, traffic access can be roughly divided into two categories: one is normal traffic corresponding to normal business, and the other is attack traffic corresponding to malicious attacks. One of the flow attack methods is DDoS attack, which can be defended against DDoS attack through Flow-spec technology. Among them, the principle of the Flow-spec technology to prevent DDoS attacks is: when the network detects attack traffic, it can trigger a flow route, that is, Flow Route. Flow Route can carry 17 attribute flow information and flow processing information including IP (Internet Protocol, protocol for interconnection between networks) 5-tuple and TCP (Transmission Control Protocol, transmission control protocol) contr...

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Abstract

The invention provides a data filtering method and device, so as to solve the problem of unstable network caused by the existing DDoS traffic attack. The method comprises the steps that first flow sent by operator boundary network equipment PE is received; a flow route carrying first information for the first flow is generated when flow route is determined as attack flow, wherein the first information is used to instruct the PE to transparently transmit the first flow; the flow route is sent to the PE; and when the first flow transparently transmitted by the PE is received, the flow route is reserved. The validity of Flow Route is kept based on the transparently transmitted attack flow. The impact on the network stability is reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a data filtering method and device. Background technique [0002] With the development of the Internet, there are more and more malicious attacks against enterprises, and enterprises are facing more and more security problems. For example, a relatively common attack against enterprises at present: DDoS (Distributed Denial of Service, Distributed Denial of Service). When a DDoS attack occurs, a large amount of traffic flows directly from the carrier side, instantly occupying the egress link resources of the enterprise, resulting in the inability to access normal business traffic and making the enterprise unable to perform business normally. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present invention is to provide a data filtering method to solve the problem of network instability caused by existing DDoS traffic attack...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
Inventor 陈岩余清炎王伟黄李伟
Owner NEW H3C TECH CO LTD