Implementation of mobile IP traversing NAPT device on Linux

This paper is an attempt to allow mobile IP to traverse Network Address Port Translation device by modifying the existing mobile IP protocol according to the RFC3519 and introduces the experiment meant to cause UDP type of tunnel to traverse the NAPT device of the private network in the Linux environment.The experiment involves enabling the mobile node to communicate with the other nodes in the local network by traversing NAPT device of foreign network due to the adoption of the co-local care address.The data analysis shows that;after roaming to a foreign network,mobile node of the modified IP protocol keeps communication with the other nodes in the local network and fulfills the purpose of allowing mobile IP to traverse NAPT device achieves,but with the increased communication latency and the significantly reduced transmission speeds.The results offer a reference for implementation of mobile IP traversing NAPT device.