The inter-operation among heterogeneous wireless networks is crucial to support ubiquitous mobility and seamless roaming. Handoffs across wireless networks in separate administrative domains should ensure uninterrupted service and authenticity of the entities involved. However, the re-authentication of a mobile node (MN) during a handoff across… (More)
IPv6, the new version of the Internet protocol, has been developed to provide new services and to support the Internet's growth. This paper presents an overview of the key security issues, which outlines the challenges in deploying and transitioning to IPv6.