Research And Design Of Campus Network Text Content Monitoring System

With the continuos development of network technology,network is becoming more and more popular,campus networ almost permeates every corner of institutions of higher learning,and plays an increasing impotrant role in teaching,research,management and subject construction of higher education.However,there are many unhealthy content such as violence,pornographic and so on in network,in order to purify the network of universities, a high-performance,high-efficient network text content monitoring system is desiderated.The paper firstly analyzes the security threats campus network facing, presents the common network security defense products(firewall,intrusion detection system),analysis the prototype of network content monitoring system. Then,intensively study the key technology in network text content monitoring system,such as the principle of network moniotoring,packet capture,IP fragment reorganization,TCP data stream reorganization,application protocol and keyworks matching.Finally,we expound the overall design and detail design for the system, for the WM algorithm we propose an improved mathing algorithm,the experiment demonstrated the efficency of th algorithm has benn further enhanced.