Design And Implementation Of Network Security Defense System

With the development of network society and the extension of internet and intranet,the problem of network security becomes more and more acute,and how to protect the data and system in the open network environment has became a more and more important and imminent question.Although the research about the security technology has also gained some achievement,but most of them put their emphasis on one kind of security technology,few consider how to integrate all kind of security technology into one perfect network security defense system. This thesis discusses the design and implement process of a network security defense system on the basis of the work of author own. In the part of design ,this thesis put the emphasis on the critical phasis of design process,they are security diplomatic and risk analysis.The part of security diplomatic discuss every aspect need to consider when design a network security defense system.and the part of risk analysis discuss how to analysis the risk of a network system and how to quantify it. In the part of implement ,this thesis put the emphasis on the security topology of network and all kinds of security technology adopt in this security network envirionment.then this thesis discuss the important component of this network security defense system-network security monitor,include its function and detail of its technology,at last, this thesis discuss the remote control panel of the network security monitor,and present the concept of security monitor center.