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WiMAX system as well as device and method for defending DDoS attack

A network system and illegal technology, which is applied in the field of network security defense in the field of wireless mobile communication, can solve the problems of lack of DDoS attack mechanism and inability to guarantee network security, and achieve the effect of enhancing security, defending against DDoS attacks, and ensuring stability

Active Publication Date: 2011-04-20
ZTE CORP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a WiMAX system and its device and method for defending against DDoS attacks, which are used to solve the problem that the current WiMAX system lacks a mechanism for dealing with DDoS attacks and cannot guarantee network security. Effective defense against DDoS attacks

Method used

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  • WiMAX system as well as device and method for defending DDoS attack
  • WiMAX system as well as device and method for defending DDoS attack
  • WiMAX system as well as device and method for defending DDoS attack

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] like figure 1 As shown, a schematic diagram of a WiMAX network system with defense against DDoS attacks is given. The network elements of the system include:

[0039] The authentication, authorization and charging server 101 is one of the network elements of the WiMAX network for providing authentication, authorization and charging functions. The authentication, authorization and billing server 101 is used to store information such as quality of service information (QoS profile) and user names, passwords, and certificates of legal users, and completes authentication and authorization when users access the network and when users are online. billing process.

[0040] The application server 102 refers to the application server of the network service provide...

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Abstract

The invention discloses a WiMAX system as well as a device and a method for defending DDoS attack. The method comprises the following steps of: configuring one ore more illegal packet intercepting modules between a base station and an access gateway in the WiMAX system, and then carrying out legal detection to upstream data transmitted by a terminal through the base station by using the illegal packet intercepting modules, if judging that the upstream data is legal data, directly transmitting the upstream data to the access gateway and then transmitting to an application server by using a main network; and if judging that the upstream data is illegal data, intercepting the upstream data. The method is further used for notifying the base station to carry out bandwidth limitation to the terminal sending the illegal data after intercepting the illegal data, and then recording a detection log and generating alarm. The device and method can effectively defend DDoS attack launched by a large number of terminals in the network, thereby enhancing the safety of the network and ensuring the stability of a wireless network.

Description

technical field [0001] The invention relates to network security defense technology in the field of wireless mobile communication, in particular to a WiMAX (Worldwide Interoperability for Microwave Access) system and a device and method for defending against DDoS attacks. Background technique [0002] DDoS (Distributed Denial of service) is a common network attack technique. The most basic DDoS attack is to use reasonable service requests to occupy too many service resources, so that the server cannot process the instructions of legitimate users, and many DoS attack sources attack a server together to form a DDoS attack. WiMAX (Worldwide Interoperability for Microwave Access) system is a broadband wireless access metropolitan area network technology based on the IEEE 802.16d / e standard. It has the characteristics of high maximum data transmission rate, large capacity, and many online users. . The large number of online users of the WiMAX network system and the characterist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/08H04L29/06H04W12/122H04W12/126H04W12/80
Inventor 林贵彬
Owner ZTE CORP
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