A novel hybrid authentication protocol for roaming users

Roaming users in a mobile communication system need to access networks at multiple points. This introduces security concerns since the user crosses multiple security zones controlled by different administrative authorities. In this case remote user authentication is used to validate the legitimacy of a remote login user. This allows the transfer of the location-dependent user's authentication credentials information from the home domain to the presently foreign one. This paper introduce a new remote user's authentication protocol for mobile user that preserve the separation of domain security zones and allows for transparent authentication for different parties in the proposed protocol.