Good Practice Guidelines

For Cybersecurity Good Practice Guidelines, please refer to the following:

• Securing Operational Technology (OT) Systems and Defense in Depth

• Risk Assessment

• Network Separation and the Demilitarized Zone

• Network Segmentation

• Open Systems Interconnection (OSI) vs Department of Defense (DoD) (TCP/IP) Models - with Operational Technology (OT) & Information Technology (IT) Protocols

• Communication Protocols and Port Usage Overview

• System Access Control

• Device Hardening

• Monitoring and Maintenance

  • An Example of Network Security Architecture

• Methods of Attack

Last update - February 2026