为了解决传统电信管理系统通讯协议如SNMP,TL1 等难以穿越NAT 的不足,针对NAT的工作原理以及SOAP 协议在协议组成方面的一些优点,提出了一个通过对SOAP 协议进行简单扩展而实现的穿越防火墙及NAT 的方法,实现对复杂网络环境中部署的终端设备的透明管理。关键词: 简单对象访问协议; NAT;XML; 网络管理系统; NGNAbstract: To resolve some lacks of traditional NMS protocols like SNMP,TL1 and so on, which can not pass through the NAT, according the work theory of NAT and the advantage of SOAP protocol framework, we give out a method to pass trough the NAT and firewall based on some extension of SOAP protocol, implement the transparent management for the terminal device which deploy in complex networks.Keywords: SOAP; Network Address Translation; XML; Network Management System; NextGenerate Network