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随着IT应用在生活中的日益普及,互联网已经覆盖了175个国家和地区的数亿台计算机,用户数量超过10亿。计算机技术广泛应用于各行各业,向着深度和广度不断地发展,构成了各自的网络,为资源共享、信息交换和分布处理提供了良好的环境,企业上网、政府上网、学校用网以及网上购物等计算机的应用表现了一个网络化的社会已经呈现在我们的面前。因此,在增加网络实用性的同时,系统的脆弱性不可避免的显露了出来,使计算机网络面临严重的安全问题。
With the increasing popularity of IT applications in life, the Internet has covered hundreds of millions of computers in 175 countries and has over 1 billion users. Computer technology is widely used in all walks of life and continues to develop in depth and breadth to form its own network that provides a good environment for resource sharing, information exchange and distribution processing, corporate Internet access, government Internet access, school networking and online shopping Computer applications such as the performance of a networked society has been presented in front of us. Therefore, while increasing the practicality of the network, the vulnerability of the system inevitably emerges, causing the computer network to face serious security problems.