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针对天地一体化网络由多个异构子网构成的网络特点和多媒体业务的协议特点,有针对性地研究了天地一体化网络中多媒体业务跨域互联的关键技术。采用抗隐蔽通道的隔离交换技术,实现业务的跨域交换。采用特征自动生成的协议检测技术,实现对多媒体信令的安全检测,阻断跨网攻击。采用基于信令的会话动态控制技术,实现对语音、视频数据的跨网互联动态控制。可以有效解决多媒体业务跨域互联的安全问题,实现天地一体化网络环境中的安全互通。
Aiming at the characteristics of the network consisting of multiple heterogeneous subnets and the protocol characteristics of multimedia services, the key technologies of inter-domain multi-domain interconnection in the world-wide integrated network are studied in detail. The use of anti-covert channel isolation switching technology to achieve cross-border business exchange. Using features automatically generated protocol detection technology to achieve the security of multimedia signaling detection, blocking cross-network attacks. Adopts the dynamic control of session based on signaling to realize the dynamic control of inter-network interconnection of voice and video data. Which can effectively solve the security problem of cross-domain interconnection of multimedia services and realize the security interworking in the world-wide integrated network environment.