Performance analysis of security mechanism during handoff in Mobile IP
With the advent of wireless devices, such as PDA, palmtops, the demand for staying connected to the internet have steadily increased. The traditional TCP/IP stack does not have support for mobility. In order to address these demands, Mobile IP protocol was proposed, which has support for mobility. With Mobile IP protocol, one can stay connected to the internet while they are moving. As the mobile node moves from one network to another, it undergoes handoff in order to register with new network. The traditional Mobile IP protocol does have built in support for security. Hence external security mechanisms such as IPSEC, AAA are used in order to address the security issues during handoff in Mobile IP. These security mechanisms introduce further delay during the handoff. This thesis focuses on addressing the delay introduced due to security mechanism during handoff in Mobile IP. This research is based on development of algorithm for securing the communication between the mobile node and the home network and also by reducing the delay associated during handoff. The main idea behind this algorithm is to use the key exchange server at the home agent and generate the subset of keys which are then used by different foreign agents to register the mobile node with the home network. In the proposed algorithm, wireless sensor networks are used to detect the movement of mobile node and inform to the respective mobility agents. Then the mobility agents and home network exchange the information and when the mobile node moves to the new network, it registers using the key generated previously. In this research, the effects of various parameters such as burst in traffic, different security mechanism have been studied. All the simulation in this research work was carried out using MATLAB and different parameters such as registration cost, handoff cost and movement cost have been studied and compared to that of previous proposed schemes.
Thesis (M.S)-- Wichita State University, College of Engineering, Dept. of Electrical and Computer Engineering