A tracking method of network survivability situation following dynamic game theory was proposed to improve the ability of real time performance evaluation and decision-making of network survivability. A modularized dynamic game evaluation model was given
which divided dynamic game process of attacker and protector into three phases
ie. resistance
recognition and recover. Then the mathematical description of dynamic game and the game tree expression of each phase game process aiming at survivability were constructed. A new income calculating scheme suitable for survivability situation awareness was proposed in final planar form. The simulations show that the proposed method enables to obtain the real time evaluation of network survivability according to the existing attacking and protecting data acquired from network system
which contains both the threat the network system encountered and the survivability of network itself. The network system's capability of survivability evaluation and decision-making is thus improved.
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