ISSN : 1796-2056
Volume : 1    Issue : 6    Date : November/December 2006

Developing Network Domain Security (NDS) Model for IP Multimedia Subsystem (IMS)
Muhammad Sher and Thomas Magedanz
Page(s): 10-17
Full Text:
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Abstract—In this research article we discuss the protocols, architecture and propose the design of
Network Domain Security (NDS) model for IP Multimedia Subsystem (IMS). The IMS is standardized
by 3GPP (Third Generation Partnership Project) and 3GPP2 as next generation service delivery
platform developed for IP technology on top of all access networks including mobile and fixed
networks. The architecture of IMS-NDS is based on Network Domain Security/Internet Protocol
(NDS/IP) which is deployed by Domain Security Gateways (SEGs). NDS/IP utilizes IP Security
(IPSec) to implement security domain services. 3GPP Authentication Framework is introduced to
authenticate the Security Gateways using NDS/IP that utilizes cryptographic security mechanisms
and security protocols provided by the IP Security (IPSec) protocol. PKI is used to generate, manage
and distribute digital certificates and keys in NDS/IP environment.

Index Terms
Network Security Domain, IMS, Security Gateways, Trust Domain, Key Management, PKI