The Research Of Mobile IP AAA Architecture

Clients obtain Internet services by negotiating a point of attachment to a "home domain", generally from an ISP, or other organization from which service requests are made, and fulfilled。 With the increasing popularity of mobile devices, a need has been generated to allow users to attach to any domain convenient to their current location。In this way, a client needs access to resources being provided by an administrative domain different than their home domain (called a "foreign domain")。The need for service from a foreign domain requires, in many models, Authorization, which leads directly to Authentication, and of course Accounting (whence, "AAA")。Mobile IP will increase the deployment of wireless data applications。To extend Mobile IP for use by cellular telephone area,some additional mechanisms are needed by which the agent at the point of connection on the foreign domain(the foreign agent) can verify the identify of the mobile node,and also authorize connectivity based on local policy or ability to pay。The extensions to Mobile IP will create a more acceptable path toward ubiquitous availability of wireless service across the domain boundaries of the operators for many different wireless access services。After studying the basic technology of Mobile IP and kinds of network security technology,potential attacking methods are analyzed and the security requests they bring to Mobile IP are discussed。This paper propose a Mobile IP security framework which can provide differentiated services based on AAA。...