H.323系统跨越代理方案探讨

H .32 3是ITU提出的基于分组网的多媒体通信协议 ,因其技术先进 ,功能强大等特点已获得广泛的认同与支持。但由于H .32 3协议体系 (尤其是其信令体系 )的复杂性 ,使得传统的防火墙 (Firewall)和网络地址转换 (NAT)技术难以提供对H .32 3系统的支持。本文提出一种方案用以实现H .32 3系统跨越代理服务器。这个方案完全与H .32 3协议兼容 ,并且尽可能维护防火墙安全策略。

Probe into the scheme for H.323 system across proxy

H.323 is a protocol series presented by ITU for multimedia communications based on packet network.It has been widely acknowledged for its advanced techniques and powerful functions.But H.323 protocol architecture,especially its signaling architecture,is very complex,it is of great difficulty of traditional firewall and NAT techniques to support the H.323 system.This paper develops a scheme which is used for H.323 system to achieve to across proxy.This scheme is compatible with H.323 protocol completely.Furthermore,it protects the security strategy of firewall as much as possible.