Sasa GateScanner Injector is a commercial operational technology network segmentation tool by Sasa Software. Sphyrna HFD Data Diode is a commercial operational technology network segmentation tool by Sphyrna Security. 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:
Enterprise and mid-market operations teams protecting critical infrastructure will value Sasa GateScanner Injector for its unidirectional optical isolation, which makes lateral movement impossible by design rather than relying on detection. The hardware-enforced one-way data diode transfers up to 1Gb per second while maintaining strict network segregation, and it directly supports NIST CSF 2.0 PR.IR by embedding resilience into your architecture rather than bolting it on afterward. Skip this if you need bidirectional communication or your isolated networks run fewer than a dozen high-volume data feeds; the per-instance licensing and manual directory scheduling make it better suited to predictable, mission-critical transfer patterns than flexible multi-directional workflows.
Enterprise and mid-market OT security teams protecting critical infrastructure from east-west lateral movement will get the most from Sphyrna HFD Data Diode because it enforces unidirectional data flow at wire speed with hardware-level assurance that no firmware or software compromise can bypass. The FPGA architecture with separate ingress and egress quads plus encrypted, signed rulesets mean you can filter at layers 2-4 and decrypt traffic for inspection without creating a single point of trust failure on the network path itself. Skip this if your environment is predominantly IT-focused or you need bidirectional segmentation; data diodes are inherently one-way tools and there's no workaround for that constraint.
Unidirectional data diode for network isolation and segregation
FPGA-based hardware filtering data diode for unidirectional data transfer
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Common questions about comparing Sasa GateScanner Injector vs Sphyrna HFD Data Diode for your operational technology network segmentation needs.
Sasa GateScanner Injector: Unidirectional data diode for network isolation and segregation. built by Sasa Software. headquartered in Israel. Core capabilities include Unidirectional optical data diode for one-way data transfer, 100/1000 Base Copper-to-Fiber conversion, Transmission verification..
Sphyrna HFD Data Diode: FPGA-based hardware filtering data diode for unidirectional data transfer. built by Sphyrna Security. headquartered in Canada. Core capabilities include FPGA-based hardware filtering with 650K logic cells, Unidirectional data transfer with physical and logical assurance, Wire-speed filtering for ISO layers 2-4..
Both serve the Operational Technology Network Segmentation market but differ in approach, feature depth, and target audience.
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