网络安全与防范

Network Safety and Guard

随着计算机网络技术的发展,网络安全成为一个突出的问题。介绍了计算机网络安全的概念和现状,从分析网络安全的缺陷入手,介绍了网络安全的防范技术;着重探讨了入侵检测技术。入侵检测是网络和信息系统安全中的重要技术手段。对该技术的概念、功能与标准、分类、主要方法及特点进行了综述,对目前一些结合计算智能的入侵检测方法做了概括性的分析,并探讨了一种基于人体免疫原理的分布式智能入侵检测系统模型并描述了其工作流程。人工免疫系统作为新型的计算智能系统,在计算机安全领域得到了广泛应用。从生物免疫机制入手,分析了目前人工免疫系统在计算机安全领域的应用及常用免疫算法应用于安全领域具有的主要优点和存在的不足。

With the development of computer network technology, the network safety becomes a outstanding problem. The article introduced the concept of computer network safety and current situation, analyzed the cause producing the network safety defect. Have the pertinency field suggest that the keeping watch technology to guarantee network safety on the basis. Intrusion detection is an important technology of network and information security. Firstly,a comprehensive discussion of intrusion detection is given in this paper. Then, some intrusion detection methods using computational intelligence are generally analyzed. Finally,a distributed model of intelligent intrusion detection based on the human Immune System is raised, and its work- ing process is described. Artificial immune system（AIS） is an emerging computational intelligent system,and is widely used in the computer security fields. This paper firstly discussed the research achievements of AIS in the computer security fields according to the application categories,and then analyzed the advantages and disadvantages of common immune algorithms＇ application in the fields.