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The urging need for seamless connectivity in mobile environment hascontributed to the rapid expansion of Mobile IP. Mobile IP uses wirelesstransmission medium, thereby making it subject to many security threats duringvarious phases of route optimization. Modeling Mobile IP attacks reasonably andefficiently is the basis for defending against those attacks, which requiresquantitative analysis and modeling approaches for expressing threat propagationin Mobile IP. In this Paper, we present four well-known Mobile IP attacks, suchas Denial-of-Service (DoS) attack, bombing attack, redirection attack andreplay attack and model them with Stochastic Game Petri Net (SGPN).Furthermore, we propose mixed strategy based defense strategies for theaforementioned attacks and model them with SGPN. Finally, we calculate the NashEquilibrium of the attacker-defender game and thereby obtain the steady stateprobability of the vulnerable attack states. We show that, under the optimalstrategy, an IDS needs to remain active 72.4%, 70%, 68.4% and 66.6% of the timeto restrict the attacker's success rate to 8.5%, 6.4%, 7.2% and 8.3%respectively for the aforementioned attacks, thus performing better than thestate-of-the-art approach.

Attacks and Defenses in Mobile IP: Modeling with Stochastic Game Petri Net