Abstract: It is required to protect the informations transferred between the interior-net and exterior-net of the Railway Customer Information Service Platform. In this paper, the “physical separation” principle of net-gap is pictured firstly, and on the base of net-gap, a new net security scheme for Railway Passenger Call-center System is designed. It is demonstrated that this scheme has the advantages of simple, fully separation and fast transmission.

Key words: Net Gap, Passenger Information Service, Call-Center, Network Security

摘要： 针对铁路客户信息服务平台中实现内网外网信息传输的安全需要，本文首先介绍了网闸技术的实现网络之间“物理隔离”的基本原理，并设计了实现铁路客运呼叫中心系统的网络安全方案。经过工程应用证明，本方案具有设计简单、隔离充分和传输效率高等特点。

关键词: 网闸, 客户信息服务, 呼叫中心, 网络安全