MODEL OF THE PROCESS OF FUNCTIONING OF THE INFORMATION PROTECTION SYSTEM FROM UNAUTHORIZED ACCESS CREATED IN THE SOFTWARE ENVIRONMENT OF IMITATION MODELING "CPN TOOLS"

Objectives . At present, conducting a computational experiment on a system for protecting information from unauthorized access operated in an automated system is a time consuming process. The greatest difficulty in this area of research is the determination of probabilistic-temporal characteristics and the formation of reports during the operation of the information protection system. In order to analyze, obtain and study the probabilistic-time characteristics of this system, it is necessary to develop a mathematical model of its operation using an imitational modeling tool. Method. One of the methods for solving this problem is a computational experiment, which is based on the construction of a simulation model. The CPN Tools environment was chosen as a software simulation product, the main advantages of which are: a high level of visualization, the ability to generate various reports on the system operation, fast modifiability of models for solving a different class of problems, as well as integration with other software means for the formation of graphical dependencies. Result. A simulation model of the system for protecting information from unauthorized access in the “CPN Tools” software environment was developed. protected performance. Conclusion. The presented im-model model of protecting information from unauthorized access in the software environment “CPN Tools” can be used as a tool in assessing the security of special bodies for the attestation of informatization objects and structural divisions of authorized departments. It can also be used in the design of such systems in order to prevent logical errors, determine their temporal characteristics and compare with the existing ones in accordance with the technical specifications for the system being developed to protect information from unauthorized access.