Network Segmentation
- bobschouten
- Mar 25
- 1 min read
Updated: Mar 26
Securing Operational Technology (OT) and Industrial Control Systems (ICS) is more critical than ever in today’s constantly evolving threat landscape.
🚨Implementing a flat network structure (where every device is connected to a single network segment) risks creating a hacker’s playground, allowing easy lateral movement between systems and increasing the risk of cyber threats.
That’s where network segmentation—rooted in the Purdue Model for Industrial Control Systems—becomes essential.
What is network segmentation?
Network segmentation is the practice of dividing a network into smaller, isolated segments to control traffic flow and limit access between systems. In OT environments, this is crucial for protecting critical assets from cyber threats, ensuring operational integrity, and reducing the risk of widespread system disruptions.
The Purdue Model provides a structured, hierarchical approach to segmenting OT networks, creating clear boundaries between different levels of operations. This segmentation helps:
✅ Limit attack surfaces – By isolating critical systems, an attacker’s ability to move laterally between systems is significantly reduced.
✅ Improve access control – Restricting communication between IT and OT environments prevents unauthorized access.
✅ Enhance monitoring and response – Segmentation allows for better visibility and faster threat detection.
At Operational Network Solutions, we specialize in securing OT and ICS environments with tailored segmentation strategies that align with the Purdue Model. Whether it’s implementing firewalls, DMZs, or Zero Trust architectures, our solutions ensure your critical assets remain protected without compromising operational efficiency.
Is your organization following best practices for OT network segmentation? Let’s connect and discuss how to strengthen your industrial cybersecurity posture!
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