关键词: 交通专网, 网络节点, 网络架构, 安全, 升级

Abstract: Traffic private network integrates data transmission and audioandvideo transmission functions, and has become the fundamental communication network for the basic information perception and business information transmission of highway and waterways once traffic private network been attacked, it will seriously affect the operation and the process of emergency disposal of the highway and waterway. Limited by the construction, funds and the technical conditions, there are potential safety hazards for the management office of the traffic private network, in particular, when providing information to the business personnel of the intranet or the public of the extranet, the security requirements cannot be met. In this paper, the network security architecture for the nodes of traffic private network is proposed, which can be updated with lowcost of the existing network to ensure security. The practice results of network security transformation of a node show that the data security and access security of node communication can be satisfied, and the application prospect is broad.

Key words: traffic information network, node network, network architecture, safety, upgrades