计算机网络信息安全及对策摘 要:众所周知，作为全球使用范围最大的信息网，Internet 自身协议的开放性极大地方便了各种互联网的计算机，扩宽了共享资源。但是，由于计算机网络的脆弱性，这种高度的依赖性是国家的经济和国防安全变得十分脆弱，一旦计算机网络受到攻击而不能正常工作，对网络信息安全的威胁主要表现在：非授权访问，冒充合法用户，破坏数据完整性，干扰系统正常运行，利用网络传播病毒，线路窃听等方面。甚至瘫痪，整个社会就会陷入危机，与它有关的安全事故屡有发生。故此，网络的安全措施应是能全方位的针对各种不同的威胁和脆弱性，这样才能确保网络信息的保密型、完整性和可用性。 本文主要介绍了有关网络信息安全的基础知识：网络信息安全的脆弱性体现、网络信息安全的关键技术、常见攻击方法及对策、安全网络的建设。并提出和具体阐述自己针对这些问题的对策。随着网络技术的不断进展，网络信息安全问题终究会得到解决。关键词：网络信息安全；防火墙；数据加密；内部网Computer Network and Information SecurityStuategieAbstract:Computer network information security and countermeasure well known,took the global use scope biggest information network ,the Internet own agreement open enormous place each kind of networking computer ,has then opened up theshared rseource. But ,as aresult of the computer network vulnerability,this kind of altiude dependence is the national economy and the national defense becomes safely extremely frail, but once the computer network comes under the attack not to be able the normal work,mainly dispiays to the network information security thrert in:The non-authorized visit,peetends to be the validated user,destroys the data integrity,the jammng system normal operation, theuse network dissenination virus,aspects and so line interception.Even is paralysed,the entire society can fall into the crisis,sometimes occurs with its related safety accident.therefore,the notwork security measere should be can Omni-directonal in view of each kind of differend threat a...
