The Best Defense Strategy against Session Hijacking Using Security Game in SDN

Session hijacking of controller attack is one of the most common ways of information leakage Software-Defined Networking is facing, which brings a serious threat to cyber security. However, the existing defense technologies mainly focus on how to detect attacks and reduce the attack success rate. The paper proposes a method from another perspective to minimize the cost that the network undertakes and find an optimal defender's strategy when an attack is unavoidable in some case. The main work is as follows. First of all, we models the scenario of attack and defense as a Stackelberg Games, and prove the optimal strategy is equal to the SSE (Strong Stackelberg Equilibrium). Furthermore, we design an algorithm to solve the equilibrium of the game in the case of infinite strategic space. Finally, the experimental results show that the proposed algorithm is feasible, and then the optimal defense strategy we obtained is significantly superior to other general strategies and cut down the total cost of the whole network in practical.