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# OT Network Segmentation Solutions 2026

OT network segmentation solutions carve operational technology environments into controlled zones so a compromise in one area cannot spread to the systems that actually move physical processes. They sit between IT and OT, between production cells, and at the boundary with external networks, enforcing what is allowed to talk to what. For CISOs inheriting plant floors, substations, or hospital networks, this is how you contain a breach without rebuilding flat, legacy networks that were never designed with security in mind. The solutions range from passive segmentation that maps and isolates assets to enforcement points like data diodes and unidirectional gateways.

17 commercial products · [What is OT Network Segmentation?](https://cybersectools.com/glossary/ot-segmentation)

## Featured on CybersecTools

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- [Strike48 Platform](https://www.strike48.com/platform?utm_source=cybersectools.com&utm_medium=featured) (Featured): Security Operations
- [SecureIntent](https://secureintent.ai/?utm_source=cybersectools.com&utm_medium=featured) (Featured): Data Protection
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- [Lunar](https://lunarcyber.com/?utm_source=cybersectools.com&utm_medium=featured) (Featured): Threat Intelligence
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- [Daylight Security](https://daylight.ai/?utm_source=cybersectools.com&utm_medium=featured) (Featured): Security Operations

## The Cyber-Physical Security market

Company data as of 2026-11-06

- 167 companies sell in this market
- $704M raised in 25 rounds in the last 12 months
- 7 acquired in the last 12 months
- 15 founded in the last two years

[Explore the Cyber-Physical Security market on Mandos](https://mandos.io/data/companies?utm_source=cybersectools.com&utm_medium=category&utm_campaign=ot-security)

## OT Network Segmentation solutions

All 17 · Free 0 · Commercial 17

1. [SpiderOak Zero Trust Data Access](https://cybersectools.com/tools/spideroak-zero-trust-data-access) (OT Network Segmentation): Zero-trust platform for secure data exchange and access control
2. [Tempered Networks Airwall Airspan](https://cybersectools.com/tools/tempered-networks-airwall-airspan) (OT Network Segmentation): Mirrors encrypted Airwall traffic to monitoring tools for OT/IoT threat detection
3. [Vantelis Protection Platform](https://cybersectools.com/tools/vantelis-protection-platform) (OT Network Segmentation): Agentless OT security platform protecting legacy ICS assets via microsegmentation.
4. [Vantelis OT Security Platform](https://cybersectools.com/tools/vantelis-ot-security-platform) (OT Network Segmentation): Agentless OT security platform for legacy assets in oil & gas environments.
5. [Network Perception NP-View](https://cybersectools.com/tools/network-perception-np-view) (OT Network Segmentation): OT network visibility platform for firewall analysis & segmentation verification.
6. [Veracity Industrial Networks](https://cybersectools.com/tools/veracity-industrial-networks) (OT Network Segmentation): OT-SDN platform for ICS network segmentation and zero-trust mgmt.
7. [genua Industrial Firewall genuwall](https://cybersectools.com/tools/genua-industrial-firewall-genuwall) (OT Network Segmentation): Industrial firewall for OT/production network segmentation and protocol filtering.
8. [genua Dioden (Data Diodes)](https://cybersectools.com/tools/genua-dioden-data-diodes) (OT Network Segmentation): Hardware data diodes enforcing unidirectional data transfer for sensitive networks.
9. [EasySec ThinGUARD 2.0](https://cybersectools.com/tools/easysec-thinguard-20) (OT Network Segmentation): OT-native zero-trust platform with device-level access control for IIoT.
10. [Byos Management Console](https://cybersectools.com/tools/byos-management-console) (OT Network Segmentation): Centralized management console for Byos Secure Edge devices with Zero Trust enforcement.
11. [ANGOKA Zero Trust Management (ZTM)](https://cybersectools.com/tools/angoka-zero-trust-management-ztm) (OT Network Segmentation): Machine identity & zero-trust access mgmt platform for cyber-physical systems.
12. [Dispersive for Cyber-Physical & OT/IoT Security](https://cybersectools.com/tools/dispersive-dispersive-for-cyber-physical-and-otiot-security) (OT Network Segmentation): Network security solution for OT/IoT systems using stealth networking
13. [Xage ZeroTrustDataExchange](https://cybersectools.com/tools/xage-zerotrustdataexchange) (OT Network Segmentation): Zero trust data exchange platform for secure data sharing across OT/IT/cloud.
14. [Armis Centrix™ Network Segmentation](https://cybersectools.com/tools/armis-centrixtm-network-segmentation) (OT Network Segmentation): Network segmentation solution for healthcare & IoMT device security
15. [Armis Centrix™ IT/OT Security](https://cybersectools.com/tools/armis-centrixtm-itot-security) (OT Network Segmentation): IT/OT security platform for converged environments with asset visibility
16. [ORDR AI Protect for Segmentation](https://cybersectools.com/tools/ordr-ai-protect-for-segmentation) (OT Network Segmentation): AI-driven network segmentation platform with automated policy generation
17. [OPSWAT MetaDefender NetWall](https://cybersectools.com/tools/opswat-metadefender-netwall) (OT Network Segmentation): Data diode & security gateway for secure unidirectional OT/IT data transfer

17 commercial products | Related: [OT Asset Discovery](https://cybersectools.com/categories/asset-discovery) · [ICS Security](https://cybersectools.com/categories/ics-security) · [OT Vulnerability Management](https://cybersectools.com/categories/ot-vulnerability-management) · [SCADA Security](https://cybersectools.com/categories/scada-security) · [CPS Protection](https://cybersectools.com/categories/cps-protection)

## How to choose OT Network Segmentation solutions

- Confirm protocol coverage for your actual environment: Modbus, DNP3, EtherNet/IP, PROFINET, OPC UA, and any vendor-specific stacks your equipment uses.
- Favor passive discovery and monitoring first, then layer enforcement, so you can segment without risking production traffic or unplanned downtime.
- Check how cleanly the solution maps to IEC 62443 zones and conduits and the Purdue model rather than forcing a generic IT VLAN approach.
- Decide which enforcement primitives you need: stateful firewalling, microsegmentation, or hardware-enforced unidirectional gateways for high-assurance boundaries.
- Account for ongoing policy burden, since OT assets change rarely but exceptions accumulate; look for asset context and automated policy suggestions.
- Verify integration with your existing OT visibility, SIEM, and incident response so segmentation events feed the same workflows as the rest of your stack.

## OT Network Segmentation Solutions FAQ

Common questions about OT Network Segmentation solutions: how to choose, pricing and comparisons.

### What is OT network segmentation?

OT network segmentation divides operational technology networks into isolated zones and conduits so that a threat in one area cannot reach safety-critical or production systems. It enforces traffic rules at the boundaries between IT and OT, between process cells, and at the perimeter. The aim is containment: limiting both attacker movement and accidental traffic that could disrupt physical operations.

### How is OT segmentation different from IT segmentation?

IT segmentation tolerates downtime and frequent change. OT segmentation cannot. Plant equipment runs for decades, speaks proprietary protocols, and often cannot be patched or rebooted on demand. Segmentation here must stay largely passive or carefully staged, avoid breaking deterministic communication, and respect models like the Purdue reference architecture and IEC 62443 zones and conduits rather than generic VLAN schemes.

### How do I choose an OT segmentation solution?

Start with what you can deploy without disrupting production: passive asset discovery and protocol awareness usually come first. Confirm the solution recognizes your industrial protocols, maps cleanly to IEC 62443 zones, and offers enforcement that fits your risk tolerance, whether firewall rules, microsegmentation, or one-way gateways. Then weigh integration with your existing OT monitoring and the operational burden of maintaining policies over time.

### How does this differ from data diodes and unidirectional gateways?

Data diodes and unidirectional gateways are a hardware-enforced form of segmentation that allows traffic in only one direction, typically out of a secure OT zone toward monitoring. They are an enforcement primitive within this category, ideal for high-assurance boundaries. Broader segmentation solutions also handle bidirectional policy, asset mapping, and microsegmentation for cases where strict one-way isolation is too rigid.

### Do I need a dedicated OT segmentation solution or will my IT firewalls work?

IT firewalls can enforce coarse IT/OT boundaries, but they rarely understand industrial protocols deeply enough to write meaningful intra-OT policy, and a misconfiguration can break deterministic traffic. Dedicated solutions add OT protocol parsing, asset context, and IEC 62443-aligned zoning. Many teams pair existing firewalls at the perimeter with a purpose-built solution for visibility and finer segmentation inside the OT environment.

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Source: https://cybersectools.com/categories/ot-segmentation

For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on the OT Network Segmentation vendors: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=category-md