随着网络技术的飞速发展和广泛应用,信息安全问题正日益突出显现出来,受到越来越多的关注。介绍网络信息安全的现状,探讨网络信息安全的内涵,分析网络信息安全的主要威胁,最后给出网络信息安全的实现技术和防范措施,以保障计算机网络的信息安全,从而充分发挥计算机网络的作用。 With the rapid development of network technology and its wide application, information security problems are increasingly prominent and are receiving more and more attention. This paper introduces the status quo of network information security, discusses the connotation of network information security, analyzes the main threats of network information security, and finally gives the realization technology and precautionary measures of network information security so as to ensure the information security of computer network and give full play to the role of computer network .