Design And Implementation Of High-speed Network Traffic Content Restore System

Network application, which is under the background of the rapid development of Internet technology and its application, has penetrated into commercial activities, national life and industrial production and other fields in our daily life. The popularization in maximum of Network technology and its application which makes people more convenient in social life has brought many unsafe factors and challenges in another way. There are large quantity of information which is abnormal and complex in Network. For example, there are massages of pornographic, violence, reactionary, crime, fraud even other security information, which will seriously affect the public benefits and social stability. Nowadays Internet has entered in to the time with high speed information network, at the same time, the traditional network security technology has transited to a serious bottlenecks period. Therefore, High-speed Network Traffic Content Restore System under the network environment plays a very significant role which can provide data for network content audit.This paper analyzes the current research, as well as P2P, HTTP traffic content restore under the high-speed network environment which is faced with technical difficulties realize the system of data acquisition and make a statistical analysis with collected data in order to gain the preliminary conclusions about restore system design and reference value. Then, the paper goes further research about IP fragmentation technology, TCP stream reassembly techniques conducted, combined with the characteristics of the HTTP protocol, recombine the idea of TCP stream, reducing unnecessary waste of the reduction caused by non-HTTP traffic. This paper also presents a method for surveillance audits of P2P spread video, which can detect the information of the users with BT or Qvod in real time and it can restore the video content by active samples for the video audits. Then this paper describes the design and implementation of high-speed network traffic content restore system in detail, which is made of restore system of HTTP traffic contents in real time and P2P system of behavior to identify and restore the contents.Finally, I build a test platform in the Key Laboratory of Intelligent Network and Network Security in Xfan Jiaotong University in the Ministry of Education, and proposed the testing method of restore system of P2P, HTTP traffic content The system has been functional tested and performance tested. Test results show that the system is capable for restoring of1Gbps bandwidth of high-speed network traffic to HTTP content, identifying P2P by behavior and restoring contents actively, the performance of the system has achieved the desired goals.