Research And Implement Of Network Content Audit System

With the development of Internet technology and the increasing popularity of the Internet, influence of network technology on people's daily lives is increasing. However, the Internet has also become the carrier of the illegal information. If the illegal information spread on the internet without control, it will bring huge danger to the society. So it is very essential to audit the information on the Internet, it make the research on the network content audit system more and more important.In this paper, we focus on the crucial techniques in network content audit system, and, the following contents are studied in this thesis.Firstly, we've researched in the network packet capturing technique especially the zero-copy technique.Secondly, we've researched in the content inspecting technology, and we propose our idea that uses the regular expression to match against the Chinese content. We also analyzed the problem which is common in regular expression matching and propose our solution.Finally, we've implement the network content audit system prototype based on the research in this paper.