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Method and system for realizing network flow cleaning

A network flow and flow detection technology, applied in the field of computer networks, can solve problems such as low processing efficiency and inability to meet the needs of backbone network network flow cleaning, and achieve the effect of improving cleaning efficiency, taking into account detection efficiency and accuracy, and reducing maintenance costs

Inactive Publication Date: 2011-03-16
ZTE CORP
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Problems solved by technology

At present, the network traffic cleaning method of packet-by-packet detection has very high requirements on the communication system and detection equipment, and the processing efficiency is low. However, the network traffic for cleaning is very large. Therefore, the existing network traffic cleaning method It simply cannot meet the needs of network traffic cleaning in large-traffic applications such as backbone networks

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  • Method and system for realizing network flow cleaning
  • Method and system for realizing network flow cleaning
  • Method and system for realizing network flow cleaning

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Embodiment Construction

[0025] Deep Packet Inspection (DPI, Deep Packet Inspection) technology and Deep Flow Inspection (DFI, Deep Flow Inspection) technology are two main ways to identify abnormal network traffic. Among them, the DPI technology adds the analysis of the application layer on the basis of the analysis of the packet header, which is a traffic detection and control technology based on the application layer; different from the load matching of the application layer by the DPI technology, the DFI technology uses a Application identification technology based on traffic behavior, that is, different application types have different states reflected in session connections or data flows.

[0026] For example, the characteristics of IP traffic in the network reflected in the flow state are very obvious: the packet length of the Real-time Transport Protocol (RTP, Real-time Transport Protocol) flow is relatively fixed, generally 130 to 220 bytes (byte), and the connection rate It is relatively low...

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Abstract

The invention discloses a method and a system for realizing network flow cleaning. In the scheme adopted by the invention, data field identifier (DFI) equipment detects network flow according to a flow detection template and transmits suspicious network flow to data processing installation (DPI) equipment; and the DPI equipment detects the suspicious network flow according to an identification template and cleans abnormal network flow according to a control policy. In the scheme adopted by the invention, DFI technology and DPI technology are combined, the contradiction between the completeness of the detection and cleaning efficiency in the network flow cleaning is well solved, the detection efficiency and accuracy are both taken into consideration, the network flow cleaning needs of mass data can be satisfied, and the network flow cleaning efficiency is improved considerably.

Description

technical field [0001] The invention relates to computer network technology, in particular to a method and system for realizing network traffic cleaning. Background technique [0002] With the rapid development of Internet business types and business volume, the garbage traffic (such as meaningless or useful traffic, or malicious attack traffic) in the network is also gradually increasing, and the bearer network is becoming more and more overwhelmed, and congestion often occurs , Insufficient bandwidth, a very important reason for this situation is that there are many abnormal network traffic in the network, such as malicious attack network traffic, unauthorized network traffic, illegal point-to-point (P2P, Peer-to- Peer) network traffic, etc., at this time, cleaning the abnormal network traffic has become a very important processing operation. At present, the network traffic cleaning method of packet-by-packet detection has very high requirements on the communication syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/56
CPCH04L63/1416H04L63/1441
Inventor 杨波宋晓丽
Owner ZTE CORP
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