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下一代网络(NGN)指以IP为核心,同时可以支持语音、数据和多媒体业务的互联网、移动通信网络和固定电话通信网络的融合网络。NGN是电信级网络,电信级网络最大的特点就是安全、可靠和高可用性。如何确保网络安全性是电信运营必须考虑的重要因素。本文从NGN网络的四个层次,分别介绍各层次安全的技术和措施的实施,研究有效可行的安全机制,构建NGN可靠的安全防御框架。
Next Generation Network (NGN) refers to a converged network of IP-centric, Internet, mobile and landline communications networks that support both voice, data and multimedia services. NGN is a carrier-class network. The greatest feature of carrier-class networks is its security, reliability and high availability. How to ensure network security is an important factor that telecom operators must consider. This paper introduces the implementation of technologies and measures at all levels from four levels of NGN network, studies effective and feasible security mechanisms and constructs a reliable security defense framework of NGN.