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sdn controller, routing/switching device and network defense method

A technology of switching equipment and controllers, applied in the field of network communication, can solve the problems of inaccurate filtering and difficulty in locating attackers

Active Publication Date: 2018-01-02
湖州帷幄知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an SDN controller, a routing / switching device, and a network defense method to solve the problems of difficulty in locating attackers and inaccurate filtering in the network defense means in the prior art.

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  • sdn controller, routing/switching device and network defense method
  • sdn controller, routing/switching device and network defense method
  • sdn controller, routing/switching device and network defense method

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Embodiment Construction

[0040] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0041] The present invention is applied in the SDN network architecture. SDN is Software Defined Network (Software Defined Network, SDN), which is a new network innovation architecture of Emulex network. Its core technology, OpenFlow, separates the control plane and data pl...

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Abstract

The present invention provides an SDN controller, a routing / switching device and a network defense method, which are applied to a network including a client, a server, and a routing / switching device connected between the client and the server. The SDN controller establishes and stores a legal TCP connection table, an illegal TCP semi-connection table, and an illegal TCP semi-connection number table; when the network is attacked, a flow table containing a filtering action type is generated and sent to the attacker The ingress routing / switching device is used to control the routing / switching device to execute the corresponding filtering strategy; the present invention adopts the SDN architecture, which can perceive the location of the attacker and accurately classify the attack message.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to an SDN controller, routing / switching equipment and a network defense method. Background technique [0002] With the development of the Internet, while the network brings convenience, network security incidents also occur from time to time. Network attacks deter online users, and the security and confidentiality of information are greatly threatened. Denial of service attack (DoS) is more and more frequent due to its tools are available everywhere, easy to operate, wide attack range, strong concealment, simple and effective, and greatly affects the effective service of the network and business host system , especially distributed denial of service attack (DDoS) has been recognized as one of the most difficult problems on the Internet. [0003] TCP (Transmission Control Protocol) flood attack is the most common attack method of DDoS. Due to the three-way handshake r...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/771H04L12/931H04L45/60
CPCH04L63/0236H04L63/1416H04L63/1458
Inventor 翟跃
Owner 湖州帷幄知识产权运营有限公司
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