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Sphyrna Security NGXS Passive Data Diode is a commercial operational technology network segmentation tool by Sphyrna Security. Armis Centrix™ IT/OT Security is a commercial operational technology network segmentation tool by Armis. Compare features, ratings, integrations, and community reviews side by side to find the best operational technology network segmentation fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Sphyrna Security NGXS Passive Data Diode
Enterprise and mid-market OT teams managing critical infrastructure with zero-trust segmentation requirements should pick the NGXS Passive Data Diode for its truly unidirectional optical isolation, which eliminates backhaul attack paths that active devices leave open. The 10Gbps throughput over passive fiber optic transmission means you're not introducing a networked chokepoint that needs patching, and that aligns directly with NIST PR.IR resilience architecture by removing a potential single point of failure. This isn't for buyers seeking software-defined segmentation or cloud-native OT connectivity; you're committing to hardware-based, physics-enforced isolation in fixed network topologies.
Enterprise and mid-market teams running converged IT/OT environments will get the most from Armis Centrix™ IT/OT Security because it actually maps segmentation policy to device reality instead of just visualizing the network topology. The platform covers all five NERC CIP compliance domains and generates ACLs directly from segmentation rules, which matters when you're auditing brownfield industrial sites where manual segmentation documentation is nonexistent. Skip this if your OT environment is air-gapped or if you need deep forensic visibility into lateral movement after breach; Centrix prioritizes prevention and continuous conformance monitoring over post-incident investigation.
Passive optical data diode for unidirectional data transmission
IT/OT security platform for converged environments with asset visibility
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Common questions about comparing Sphyrna Security NGXS Passive Data Diode vs Armis Centrix™ IT/OT Security for your operational technology network segmentation needs.
Sphyrna Security NGXS Passive Data Diode: Passive optical data diode for unidirectional data transmission. built by Sphyrna Security. headquartered in Canada. Core capabilities include Passive optical isolator for unidirectional data flow, 10Gbps throughput performance, 850nm wavelength optical transmission..
Armis Centrix™ IT/OT Security: IT/OT security platform for converged environments with asset visibility. built by Armis. headquartered in United States. Core capabilities include Asset visibility and discovery for IT and OT devices, Network segmentation visualization and management, Compliance mapping to NERC, MITRE ATT&CK, ISA/IEC 62443, ISO 27001, NIST SP 800-82..
Both serve the Operational Technology Network Segmentation market but differ in approach, feature depth, and target audience.
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