During the course of the project, the system for secure communication with branches was successfully implemented, making it possible to create secure communication channels between branches and the central office of NIKIMT-Atomstroy, JSC; provide access to remote users to the central office resources via secure communication channels; create a protected, high-performance infrastructure for the voice traffic transmission and videoconference communication; improve security of network resources of NIKIMT-Atomstroy, JSC, against external intrusion and ensure user traffic control.