WWW service is the most popular service at Internet. Network security draws much attention of people. Web application security is one of the hottest topics in WWW research. The aim of the paper is to design and implement Web application firewall, which is used to resist the web attacks and make sure the security of web application server.In this paper, first of all, we analyze the theories and techniques of Web application firewall. Then, we study the BLP security model and association rule arithmetics, improve the BLP model. We propose a solution of the system, design and implement the system based on the solution. Finally, we apply the system in a multimedia resource management system to improve its security and reliability, and the experimental results validate the effectivity of our solution. |