Secure mobile IP using IP security primitives

As the commercial use of the Internet becomes common and the demand for mobile computing through the Internet is emerging, it is necessary to construct a secure mobile environment. This paper presents an implementation example of such a system which employs a secure mobile IP protocol on stationary security gateways and mobile hosts. The IETF standard Mobile IP protocol is modified with IP security primatives, which control the packet flow from a mobile host through multiple security gateways. Using IP security primitives, the packet going into a corporate network and the packet going out the visiting network are both securely processed. This IP security based packet control allows transparent mobile access from anywhere on an IP network even with sufficient security support by encrypting and authenticating IP packets. The current implementation status and the performance evaluation is also reported.