Authentication of Mobile Node Using AAA in Coexistence of VPN and Mobile IP.
ABSTRACT The enterprise network service is composed of Internet, intranet and DMZ. The rationale of Mobile IP is to provide the mobile
access transparency without regarding to the type of services or network topology. However, the announced Mobile IP specification
dose not deal with such a service from outside to inside the intranet smoothly. This paper provides the authentication and
key exchange using AAA infrastructure for a user in Internet to access the intranet behind the VPN Gateway while roaming.
Also, the performance analysis of the proposed scheme is presented.