Design And Implementation Of Defending Cache Pollution Attacks In Smart Identifier Network

In recent years,with the rapid development of Internet technology and business,people are increasingly demanding on network performance and security.In order to meet the demand of the Internet development and overcome the bottleneck of the existing network caused by its original defects,the National Engineering Laboratory of the Next Generation Internet and Internet Device proposed Smart Identification Network,a new type of network.The study has applications to mobile network,and established LTE-Based Smart Identifier Mobile Private Network.The research of this paper relies on the major security project "Application Research of Identity Network Technology in Mobile Private Network",further studies on the cache security problem of LTE-Based Smart Identifier Mobile Private Network,designs and implements a scheme to resist the movement of cache pollution attacks.This method can effectively resist the problem of cache space being maliciously occupied due to aggressive behavior,and improves the user request hit ratio by dynamically maintaining the steady state cache distribution.This paper mainly studies the design and implementation of cache pollution attacks defense system.By detecting and preventing the two modules working together,the system can effectively identify abnormal attacks and reduce the impact of attacks on the private network cache resources.In this paper,we adopt the detection method based on the content popularity distribution statistics to conduct the statistical analysis and prediction of the historical popularity of the services in the private network to detect the abnormal behavior and achieve the purpose of defense through the dynamic adaptation of the caching strategy.This paper first outlines the LTE-Based Smart Identifier Mobile Private Network and proposes the cache security problems existing in its network architecture.Secondly,the demand analysis of the offensive and defensive system of cache pollution attacks is put forward,and the overall design framework of offensive and defensive system is put forward.Thirdly,the algorithm and function design are respectively carried out for attacks detection and attacks defense.The implementation of each function module is described in detail.Finally,we tested the function and performance of the cache pollution attacks detection and defense system.The test results show that the cache pollution attacks detection and defense system designed in this paper can detect and discover the cache pollution attacks in the smart ID private network and protect the caching nodes' caching distribution from damage in the event of attack and reduce the attacks effectively The negative impact of behavior on the normal user experience on the Internet.