安全协议提供安全服务，是保证网络安全的基础。
Security protocols are the basis of security which provide security services in network.
在现有网络安全计费方法的基础上，结合宽带社区信息服务的特点，设计一种基于社区信息服务的安全计费集成系统。
Based on the methods of network security counting and combined with the feature for wideband community information server, a security counting system is designed in this paper.
基础设施方面包括网络的接入和结构规划、信息服务器的设置、网络安全中的物理保障等；
Infrastructure include access and structure planning , establishment of the information server, physical guarantee in the online security etc.
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