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一、网络安全重要性随着计算机技术的迅速发展,计算机处理的业务已经由基于单机的数学运算、文件处理和简单连接的小型局域网,发展成为技术复杂的企业内部网(Intranet)、企业外部网(Extranet)和全球互联网(Internet)。网络的普及极大地缩短了人们之间的距离,给企业的发展带来了革命性的改变,提高了企业的市场反应速度和办事效率,使企业更具竞争力。短短10年间,我国的许多大型企业和国家部门都纷纷建立起自己的企业内部网,有些甚至可以提供互联网上的服务。但在提供多样化信息服务的同时,在信息处理能力、网络流量按指数增加的同时,基于网络系统自身的安全问题日益突出。根据一些权威报告
First, the importance of network security With the rapid development of computer technology, computer processing business has been based on a single machine based on mathematical operations, file processing and simple connection of small local area network, the development of a complex technology enterprise intranet (Intranet), Enterprise External Network (Extranet) and the global Internet (Internet). The popularization of the Internet has greatly shortened the distance between people, brought a revolutionary change to the development of the enterprise, improved the market reaction speed and efficiency of enterprises, and made the enterprises more competitive. In just 10 years, many of China’s large enterprises and national departments have set up their own intranet, some of which can even provide Internet services. However, while providing diversified information services, while the information processing capabilities and network traffic increase exponentially, security issues based on the network system have become increasingly prominent. According to some authoritative reports