Gartner Research

Decision Point for Postmodern Security Zones

Published: 11 September 2017

ID: G00337220

Analyst(s): Joerg Fritsch


Many organizations reproduce legacy designs — based on network segmentation paradigms — in new environments, thus leading to suboptimal architecture. Technical professionals can use this new model and architecture examples to group and segregate digital assets.

Table Of Contents

Decision Point Question

Decision Overview

  • Traditional Security Zones
  • Logical Security Zones
    • Microsegmentation Technologies
    • Software-Defined Security Zones
    • Tier-by-Tier vs. Application-by-Application Security Zoning
    • Reality Check: Do You Have a Case for Software-Defined Security Zones?

Decision Tool

  • Zone Size Constraints
    • Minimum Zone Size Constraints
    • Maximum Zone Size Constraints

Principles, Requirements and Constraints

  • Principles
  • Requirements and Constraints
  • Traditional Architectures
    • Traditional Network Properties
    • Enclaves
  • Government Networks
    • Government Network Properties
    • Subzones
  • Hexagonal Architectures
    • Hexagonal Network Properties
  • Hybrid IT
    • Hybrid IT Network Properties
    • How to Get From Here to There: Leveraging Microsegmentation in "Brownfield" Approaches


  • Open Architecture
  • OT Networks
    • Controller-Area Network Buses

Future Developments

  • Automated Provisioning and Microsegmentation
  • IoT and Industry 4.0
  • Appendix
    • Zone Enumeration
    • Zone Reduction
    • JavaScript Tool to Enumerate Possible Zones

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