Network Segmentation for OT Environments

Flat" networks carry a high risk. Netfosys applies intentional segmentation to reduce the attack surface, isolate mission-critical systems, and enhance the overall cyber resilience of your environment

Why Network Segmentation Matters

If there is a compromised endpoint in a flat OT network, attackers can move laterally without restriction - potentially disrupting operations or activating ransomware. Proper segmentation will provide an extra layer of protection and help you comply with regulations

What We Offer

Netfosys develops industrial networks with distinct zoning and secure conduits that are meant for effective OT environments and are mindful of operational impact

Purdue-aligned zoning

We develop layered segmentation that valuable aligns with the Purdue Model Levels 0-5 to help in separating critical OT away from IT systems

Secure zones and conduits

OT zones that are separated by firewalls, VLANs, or data diodes means that we build industrial zones that have all data flows controlled and auditable

Micro segmentation

Micro segmentation allows for asset level isolation within critical zones to not allow for lateral misuse of guest access even when there are segmented layers of security active

Protocol aware filtering

Protocol level filtering represents the most granular policy enforcement for known OT protocols including Modbus, OPC UA, DNP3, and PLC communication

IT/OT DMZ

Also known as "demilitarized zones", industrial DMZs allow for secure staging and migration processes for IT outbound to OT inbound, but fundamentally protects the OT environment from being compromised

Why Choose
Netfosys for
Network Segmentation?

We execute segmentation solutions in real-world environments and support long-term operational and regulatory needs

OT Network Segmentation Expertise

1
OT-centric Architectures
Solutions custom built for legacy systems, industrial protocols, and service-sensitive control environments
2
Compliance-Aligned Frameworks
Constructed supported compliance with IEC 62443, NIST 800 82, ISA/IEC 62443, and CISA best practices
3
Custom DMZ & Firewall Plan
We build our firewalls, VLANs, and conduits with specific rule sets and industrial context
4
Zero Trust Micro Segmentation
Enable role, asset, and context-aware policies to prevent lateral movement even within trust zones
5
Industrial Protocol Visibility
By profiling ICS traffic and behaviors, we verify traffic is functioning as intended in operational model time
6
Ongoing Audit & Optimization
Segmentation is not static, and will change technology and compliance shifted, and sharpened through continuous review.

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