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针对Ｉｎｔｅｒｎｅｔ在内的计算机网络在安全方面的薄弱性，分析了防火墙技术、数据加密技术等安全措施的特点，并介绍了目前业界流行的Ｉｎｔｅｒｎｅｔ网络安全协议及产品。
In view of the weakness of the security of the computer network such as the Internet, this paper analyzes the characteristics of security measures such as firewall technology and data encryption technology, and introduces the popular Internet network security protocols and products in the industry.