The structure of platform system security is determined through analyzing its needs . the platform system security is detail designed from two parts : passive recovery and positive recovery . at last the detail implement plan of platform system security is expatiated from deployment of firewall and intrusion detection system 通过平台系统安全需求的分析，制定了平台系统安全体系结构，分别从被动防御和主动防御两方面对平台系统安全进行了具体的设计，最后从防火墙配置和入侵检测系统配置的角度，阐述了平台系统安全的具体实施方案。
