Double Layer Gateway Model for Connection Between Production Network and Enterprise Network

Abstract

Integration of enterprise informational systems such as ERP to production networks becomes deeper. Double-layer gateway model presented in this paper could reduce potential risks of enterprise systems integration. The scope of this paper is creating generic model which should be safer than standard models. Model of safety solution for gateway is suggested. Several models including presented by CISCO were analyzed. Models were assessed as time homogeneous discrete state Markov process solved by Kolmogorov equation. Enterprise network security, human factor, vulnerabilities in PLCs and network equipment were taken into account. Dangerous of disregarding safety efforts during production network integration is shown. Model presented in this paper was developed for pharmacy industry but it can be used in other production sectors with high mistake risk as well. Solution presented in this paper is more than 200 times secure than very common solution without safety efforts and 19 times safer than solution presented by major company.