Research On Dynamic Frame Reconstruction Based On Data Link Security

With the rapid development of information technology,the Internet has become an indispensable part of people's life in today's Internet is open,flexible,shared and non boundary characteristics,but also has its own vulnerability,exposes many security risks,it is vulnerable to various types of malicious attacks.The network eavesdropping,as a typical network security threats,to capture the user's account,password and other sensitive information,resulting in a higher level of security risk,greater harm.But as people pay more attention to safety,network eavesdropping difficult to achieve improved,today's network eavesdropping appeared closely combined with the technology of network attack trends,appear a lot of methods by means of network attacks and achieve wiretapping,guarding against network eavesdropping but lagging behind.The common network eavesdropping defense technology will focus on data encryption and identity authentication,application layer,transport layer,network layer security protocols emerge one after another,but the defense effect is not significant.The existing network security technology ignores the important role of data link in network communication.The realization of network eavesdropping and attack is due to the fact that the traditional data link can not guarantee its security and uniqueness.To solve the above problems,this thesis proposes a secure data link establishment mechanism and data link layer dynamic frame reconstruction technology.This mechanism can realize switching control in network communication,secure data link between two nodes with dynamic frame reconstruction technology to construct the network communication process,ensure the uniqueness of the data link between two nodes,limited data link access to third party,reached the purpose of preventing network bugging.At the same time,the dynamic frame reconstruction technology can achieve the security data transmission which is not dependent on the protocol structure,which makes the frame reconstruction technology have a wide application and usability.Finally,the design and implementation of anti eavesdropping system dynamic frame reconstruction technology based on common network attack technology to eavesdropping and as verification,prove the validity and practicability of the anti eavesdropping system dynamic frame reconstruction based on technology.The experimental results show that the network eavesdropping defense system based onframe reconstruction can establish a secure and unique data link between two nodes in the network,which can effectively prevent the access of the third party,and prevent the occurrence of network eavesdropping.