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该文在阐述计算机网络的基础上,分析了计算机网络安全的现状,介绍了几种网络安全的常用技术,提出了计算机网络信息安全应注重研究的几个问题.“,”This paper expounded on the base of Computer Network security. It analyzes status of computer Network security. Then, some network security in common use technologies are introducedFinally, present several problem attach importance to study of computer Net-work.