近年来,随着计算机技术的突飞猛进,计算机网络的日新月异,网络已经深入到我们生活的各个角落。小到个人的生活,工作。大至国家的发展以致整个人类文明的进步。计算机网络在扮演着越来越重要的角色。人们在提供了极大的方便,然而,信息化在给人们带来种种物质和文化享受的同时,我们也正受到日益严重的来自网络的安全威胁,诸如网络的数据窃贼、黑客的侵袭、病毒发布者,甚至系统内部的泄密者。尽管我们正在广泛地使用各种复杂的软件技术,如防火墙、代理服务器、侵袭探测器、通道控制机制,但是,无论在发达国家,还是在发展中国家(包括我国),黑客活动越来越猖狂,他们无孔不入,对社会造成了严重的危害。与此同时,更让人不安的是,互联网上黑客网站还在不断增加,学习黑客技术、获得黑客攻击工具变得轻而易举。这样,使原本就十分脆弱的互联网越发显得不安全。 In recent years, with the rapid development of computer technology and the ever-changing computer network, the Internet has penetrated every corner of our lives. Small to personal life, work. As much as the development of the country so that the progress of the entire human civilization. Computer networks are playing an increasingly important role. People are providing great convenience. However, while informatization brings people material and cultural enjoyment, we are also suffering from increasingly serious network security threats such as network data thieves, hacker attacks, viruses Publishers, and even burglars inside the system. Although we are using a wide range of complex software technologies such as firewalls, proxy servers, attack probes, and access control mechanisms, hackers are becoming increasingly rampant in both developed and developing countries, including ours They are pervasive and cause serious harm to society. At the same time, it is even more disturbing that hacker sites on the Internet are still growing, learning hacking techniques and getting hacker tools a breeze. In this way, the already fragile Internet becomes increasingly unsafe.