摘要
TDCS/CTC系统作为铁路运输指挥的重要行车设备,系统网络安全是保障其正常运行的因素之一,防火墙是重要的网络安全设备。简单介绍防火墙在TDCS/CTC系统中应用情况及接入模式,并根据TDCS/CTC系统的特点详细分析中心网络的2种防火墙接入模式(路由模式和桥接模式)及透明桥接模式的优势。
As one of the critical equipment of train operation dispatching and command in railway transportation system,the network security of the TDCS/CTC is one of the key factors to ensure its normal operation and the firewall is one kind of key devices for protecting the network.In this article,the usage and access mode of the firewall in TDCS/CTC is introduced.According to the features of TDCS/CTC,the two access modes,Route Mode and Bridging Mode,in the center network are analyzed and the advantages of the transparent bridging mode are described
出处
《铁道通信信号》
2012年第3期61-63,共3页
Railway Signalling & Communication
关键词
防火墙
路由器
交换机
网络层
数据链路层
路由选择协议
透明桥接
TDCS/CTC（Train Operation Dispatching Command System/ Centralized Traffic Control）
Firewall
Switch
Network Layer
Data link layer
Routing protocols
Transparent bridging
