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。 In order to maintain social harmony and stability and prevent crimes against crime, public security organs have accelerated the pace of video image information networking. However, in the process of networking the video private network and the public security information network, the problem that the signaling flow and the video stream cross the border protection facilities such as NAT must be solved. This article based on the virtual address business and dual address services, design and practice a common IP monitoring system architecture. In other words, an adaptation layer is implemented between the monitoring service and the bearer network, shielding the network features and shielding the service information. Through the analysis of system architecture and security analysis, we can see that the system architecture designed can greatly reduce the workload of upper and lower equipment development, and can flexibly meet the needs of various networking deployment.