0引言计算机网络已经普遍使用到经济、文化、科技、企业运营等方面,伴着世界经济一体化的进程,计算机网络使用到了国际中的各个行业、各个企业、甚至是各个家庭,它让人们的生活变得简捷,人们很难离开计算机网络。无论是国家的利益、国家安全的程度,还是有关社会稳定方面都跟计算机信息安全联系了起来。计算机网络信息安全与保护体系的构建与完善的有关技术愈来愈得到有关专家的重视,计算机网络信息安全与保护的意识也愈来愈高。由此可以看出,计算机网络的安全和保护非常值得人 0 Introduction Computer networks have been widely used in economic, cultural, scientific and technological, business operations and other aspects. Along with the process of world economic integration, computer networks have been applied to various industries, enterprises and even families in the world. Life has become simple, it is difficult for people to leave the computer network. Whether it is the interests of the country, the level of national security, or the social stability are linked with the computer information security. Computer network information security and protection system construction and improvement of the relevant technology has increasingly been the attention of experts, computer network information security and protection awareness is also getting higher and higher. From this we can see that the security and protection of computer networks is very worthwhile