An implementation of mobile IP´s tunnel technology in Linux kernel

Mobile IP is a network technology to realize the communications between hosts and LAN in TCP/IP network, which mainly resolves the problem of LAN not able to outspread. Mobile IP makes IP devices browse the Internet at any moment and anywhere. This flexible communication scheme can provide a powerful communication basis for CSCW, and it will make the application of CSCW going further. Our thesis brings forward a concrete implementation of the mobility on IP layer of TCP/IP protocol family to assure the mobile node feeling no infection of mobility no matter what protocol be used on application layer and transport layer. We work with Linux and utilize its opening kernel environment to provide a practicable scheme to implement tunnel technology of mobile IP. We focus on IP layer, extra dispose the packets and make them transferred through tunnel, which can assure all the packets transmitted freely between the mobile node and other nodes. We directly implant the encapsulation and decapsulation process into Linux kernel in order to improve speed and security.