Improved Model of Unidirectional Data Transmission System

Abstract

The use of modern information security tools to protect information infrastructure objects interacting with other information systems does not guarantee cybersecurity in the event of complex and targeted cyber attacks. To address this issue, it is advisable to use unidirectional data transmission tools. This article pre sents the results of the substantiation and development of an improved unidirectional data transmission model, in which guaranteed unidirectional data transmission is ensured by hardware, and application-level operation is ensured by special software. To ensure fault tolerance, redundant proxy servers are used to organize the ope ration of special software. An algorithm for the improved model is presented, which provides for the use of a reverse data transmission channel to confirm successful transmission, and also implements a probabilistic mechanism, which reduces the risk of an attacker exploiting the reverse channel to transmit information using frequency or time modulation.