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本文阐述了信息产 业和信息革命对现代社会产 生的巨大影响。指出网络安全的重要性，简述网络安全的概念、网络安全技术的发展历史和趋势；介绍常用的网络安全技术 及安全策略，分析网络安全软件应用的市场前景。
This article illustrates the tremendous impact that the information industry and information revolution have on modern society. The importance of network security is pointed out. The concept of network security, the history and trend of network security technology are briefly introduced. The common network security technology and security strategy are introduced, and the market prospect of network security software application is analyzed.