Internet/Intranet网络和信息资源安全问题一直是困扰网络管理者和使用者的一个大问题,同时也是阻碍Internet/Intranet技术发展和推广的负面因素。而且,网络和信息系统的安全不仅被政府、军队、金融等国家核心部门所高度重视,而且受到广大商业企业和普通事业单位的密切关注,换言之,网络安全问题普遍存在,应当引起最终用户、集成商、软硬件厂商等各个方面和环节的广泛注意。 Internet安全之所以受到“威胁”,恰好是Internet的两个“优势”所造成的:一方面,Internet是标准化的、开放性的网络,其架构、协议和控制策略等相当简洁、高效、灵活,然而正因为如此,这一相对宽松的环境无意中给网络攻击者提供了用武之地;另一方面,Internet发展到今天已经覆盖全球,并在以更迅猛的态势深入各个行业、各个阶层、社会生产和生活的各个领域。人们对于Internet的依赖性越来越强,那么,一旦网络安全千疮百孔,则将来人类就如生存于山尖危巢之巅。可以说,目前基于Internet的电子商务(EC)发展的最大障碍就是网络安全。 Internet / Intranet Network and information resource security issues have been a big problem for network managers and users, and are also a negative factor that hinders the development and promotion of Internet / Intranet technologies. Moreover, the security of networks and information systems is not only highly regarded by the core departments of the government, the armed forces, finance and other countries, but also closely monitored by most commercial enterprises and ordinary public institutions. In other words, the issue of network security is ubiquitous and should lead to end-user, Business, hardware and software vendors and other aspects and areas of extensive attention. On the one hand, the Internet is a standardized and open network, and its architecture, protocols, and control strategies are quite simple, efficient and flexible. On the one hand, Internet security is “threatened” and happens to be caused by two “advantages” However, because of this, this relatively loose environment inadvertently provides a source of power for cyber-attackers. On the other hand, the Internet has reached the global coverage today and has been in a more rapid situation in various industries. All walks of life, society, Production and life in all areas. People are more and more dependent on the Internet, so once the network security riddled with holes, then in the future, humans will survive on top of the peak. It can be said that the current Internet-based e-commerce (EC) the biggest obstacle to the development of network security.