| With the rapid development of computer network technology, it has deep affect on many factors of society. Many networks have been established in the enterprises and governments and connected to the Internet in order to achieve and make use of the information. Many problems accompany with the high speed development of computer network, especially the network security problem.This thesis designs and implements a website content defense system based on well studying and analyzing the theory and key technology and of website content defense.Firstly, the paper analyzes the elements of website content defense and the key technology.Secondly, the paper introduces some Hash arithmetic and experiments their compute efficiency strictly.Thirdly, the paper introduces FTP and Socket used in the system and analyzes the modules and their relations in this system.Finally, implements a website content defense system according to the theory.The paper makes a deep research on website content defense and analyzes the elements of website defense technology. It has some reference values of website defense. |