Sphyrna NGXS UGW-100 vs Waterfall Security Solutions: 2026 Comparison

Sphyrna NGXS UGW-100

Enterprise and mid-market security teams protecting sensitive OT networks from east-west lateral movement need the Sphyrna NGXS UGW-100 because hardware-enforced unidirectional gateways are the only architecture that actually stops data exfiltration at the physics level, not the policy level. EAL 4+ Common Criteria and TEMPEST Zone 1 certifications mean this box works in high-assurance environments where software-only controls fail compliance audits. Skip this if your priority is network visibility or threat hunting; the UGW-100 is a one-way valve, not a sensor, and it won't help you detect what's moving across the boundary.

Waterfall Security Solutions

Enterprise and mid-market teams running critical OT/ICS infrastructure will get the most from Waterfall Security Solutions because hardware-enforced unidirectional gateways actually stop lateral movement that software firewalls can't, turning network segmentation from a policy exercise into a physics problem. The tamper-proof Waterfall Blackbox forensic repository and centralized monitoring address the RS.MI and DE.CM gaps that plague most OT deployments, giving you provable incident containment when breaches happen. Skip this if you need bi-directional data flow between OT and IT networks or if your OT environment runs commodity IT protocols; Waterfall's strength is enforcing one-way trust boundaries, which means some legitimate use cases require workarounds like the WF-Secure Bypass emergency access mode.