摘要
No.7信令系统(SS7)是公用电话网的关键支撑系统,SS7网络最初作为封闭网络来设计的,整个网络由运营商完全控制,各实体高度信任。文章分别针对该系统的信令协议、网络节点和来自外部网络的安全威胁进行了分析,并从协议安全、边界防护和内部安全加固三个方面提出了构建信令系统防护体系的方案。
Signaling System No.7（SS7） is the most import support system in Public Switch Telephone Network（PSTN）. SS7 network is initially designed as a closed network, which is completely controlled by the carrier and in which each entity is highly trusted. This paper analyzes the security threat on protocol, network node and the external interface in SS7 network. And then a scheme is proposed to build a defense system for SS7, which consists of three aspects￡^- that is￡^- security of protocol, safety of network boundary, and the internal security.
出处
《信息安全与通信保密》
2008年第8期109-111,115,共4页
Information Security and Communications Privacy
关键词
信令
SS7
安全
威胁
防护
Signaling
SS7
security
threat
defense
