A Two-Stage Policy for a Server System With Illegal Access  
Author Mitsuhiro Imaizumi
Co-Author(s) Mitsutaka Kimura
Abstract As the Internet technology has developed, the demands for the improvement of the reliability and security of the system connected with the Internet have increased. Although various services are performed on the Internet, illegal access on the Internet has become a problem in recent years. This paper formulate a stochastic model for a system with illegal access. The server has the function of IDS, and illegal access is checked in two stages which consist of simple check and detailed check. We apply the theory of Markov renewal processes to a system with illegal access, and derive the mean time and the expected checking number until a server system becomes faulty. Further, an optimal policy with minimizes the expected cost is discussed. Finally, a numerical example is given.
Keywords Two-stage policy, Illegal access, Markov renewal process, Optimal policy
    Article #:  23-176
Proceedings of the 23rd ISSAT International Conference on Reliability and Quality in Design
August 3-5, 2017 - Chicago, Illinois, U.S.A.