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简要介绍防火墙的基本概念,对现阶段防火墙的分类进行了系统的分析了,在此基础上对防火墙技术的发展趋势进行了展望。
Briefly introduce the basic concept of the firewall, the classification of the firewall at the current stage of a systematic analysis of the firewall technology on the basis of the development trend of the outlook.