This paper deals with modeling of network’s dynamic using game theory approach. The process of interaction among players (network users), trying to maximize their payoffs (e.g. throughput) could be analyzed using game-based concepts (Nash equilibrium, Pareto efficiency, evolution stability etc.). In this work we presented the model of TCP network’s dynamic and proved existence and uniqueness of solution, formulated payoff matrix for a network game and found conditions of equilibrium existence depending of loss sensitivity parameter. We consider influence if denial of service attacks on the equilibrium characteristics and illustrate results by simulations.

This paper deals with conflict control models of dataflows on the Internet. The problem is considered, its urgency is emphasized, and current approaches to solving it are described. For networks with varying dataflows and conflicting users (denial-of-service attacks), a new approach to the analysis based on conflict-control models is proposed. A control model for a class of networks with a fixed window is developed and the existence of a time-optimal solution is shown. Data loss conditions are established and the system stability against some types of attacks is found.

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