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随着计算机和网络技术的迅猛发展和广泛普及,企业办公和各种业务系统都立足于网络。但是,网络所具有的开放性、自由性在增加应用自由度的同时,对安全提出了更高的要求。一旦网络系统安全受到严重威胁,甚至处于瘫痪状态,将会给单位、企业、社会、乃至整个国家带来巨大的经济损失。如何使信息网络系统免受黑客和病毒的入侵,已成为信息事业健康发展所要考虑的重要事情之一。
With the rapid development of computer and network technology and its widespread application, corporate offices and various business systems are based on the Internet. However, the network’s openness and freedom increase the degree of freedom of application and put forward higher requirements on safety. Once the security of the network system is seriously threatened or even paralyzed, it will bring huge economic losses to the units, enterprises, society and even the entire country. How to make the information network system free from hacking and virus invasion has become one of the important things to be considered in the healthy development of information industry.