面向NAT网络环境的IP监控系统架构  

NAT-oriented IP Surveillance System Architecture

作　　者：周迪 赵兴涛[2] 

机构地区：[1]浙江宇视科技有限公司,杭州310053 [2]中国人民公安大学警务信息工程学院,北京102623

出　　处：《中国公共安全（学术版）》2014年第2期130-133,共4页China Public Security(Academy Edition)

基　　金：公安部科技强警基础工作专项2012GABJC019和2012GABJC021

摘　　要：为了维护社会和谐稳定,预防打击犯罪,公安机关加快了视频图像信息联网建设的步伐。然而,在视频专网与公安信息网联网过程中,必须解决信令流和视频流穿越NAT等边界保护设施的问题。本文基于虚地址业务和双地址业务,设计并实践了一种通用的IP监控系统架构。即在监控业务与承载网络之间实现了一个适配层,对上屏蔽网络特征,对下屏蔽业务信息。通过对系统架构的效果分析和安全性分析可以看出,设计的系统架构可以大幅减少上下层设备的开发工作量,并可灵活满足各种联网部署需求。Public security agencies accelerate the construction pace of Video Information sharing in order to maintain social harmony and stability,to prevent and fight crime. However,an issue of signaling and the associated media flow passing through NAT-like protections must be resolved during interconnecting between public security information networks and video private networks. A general IP surveillance system architecture is designed and implemented based on virtual address and dual address methods. A adapt layer is developed between underlying network and video surveillance service,which hides network characteristics to the upper layer,and hides service details to the lower layer. It is obvious that this architecture can reduce arduous development efforts and satisfy the deployment requirements through effectiveness analysis and security analysis.

关 键 词：IP视频监控 NAT 防火墙 视频专网 公安信息网 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]