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文中就信息网络安全内涵发生的根本变化,论述了网络防火墙安全技术的分类及其主要技术特征。论述了防火墙部署原则,并从防火墙部署的位置详细阐述了防火墙的选择标准。
In this paper, the fundamental changes in the connotation of information network security are discussed, and the classification of network firewall security technology and its main technical features are discussed. Discusses the principle of firewall deployment, and elaborates the selection criteria of firewall from the location of firewall deployment.