Zero Trust for Network Engineers: An Introduction

This Habr article explores the Zero Trust concept from a network engineering perspective. Traditionally, network engineers focus on connectivity and resource availability, while access control is delegated to information security specialists. The author highlights that the Zero Trust model shifts this dynamic, requiring network professionals to be more deeply involved in access policy management. In the face of modern threats, perimeter defense is no longer sufficient, and network infrastructure must become an active participant in verifying every request. The article serves as an introductory guide for engineers looking to understand how 'never trust, always verify' principles integrate into daily network operations and architecture. This redefinition of roles enables the creation of more resilient and secure systems, where every data packet undergoes rigorous verification, regardless of whether its source is inside or outside the corporate network.