The research and design of content-based network monitor system

At present, harmful information promulgated on the internat has become an important social proble, which not only poisons people's mind, but also might effect social stability and country security. In order to reinforce the control of the network infromation and guarantee the security of the content promulgated on networks, the paper proposes a content-based network monitoring system. This paper first introduces network content monitoring's principle and the functions of the system, then presents the key technologies. It is proved that the system can monitor the LANs and keep the security of the content on networks effectively.