Waterfall Security · Unidirectional Gateway · Data Diode · OT/SCADA · Critical Infrastructure

Waterfall Security — Hardware-Enforced One-Way Data Flow for OT

Waterfall unidirectional security gateways use hardware physics to enforce one-way data transfer. No software. No configuration. No remote exploit can cross a laser and a photodetector. Connect your OT/SCADA historian to your IT network and cloud analytics — while making remote attacks on your industrial network physically impossible.

Waterfall Authorized Partner 100+ Industrial Connectors NCIIPC / IEC 62443 Aligned GST Invoice
Hardware
Physics Enforces One-Way Flow
100+
Industrial Protocol Connectors
Zero
Remote Attack Surface on OT
Cloud
Safe OT-to-Cloud Data Transfer

Why Ogma for Waterfall?

Ogma is an authorized Waterfall Security partner with engineers experienced in OT/SCADA environments — power utilities, manufacturing, oil & gas, and defence. We understand both the IT integration requirements and the operational constraints of industrial environments.

  • Authorized Waterfall Security reseller and integrator
  • OT data flow mapping — historian, SCADA, HMI connector design
  • OSIsoft PI, OPC-UA, Modbus, and custom connector configuration
  • Cloud extension — secure OT-to-AWS/Azure/IBM Cloud pipeline
  • IEC 62443 zone and conduit architecture design
  • On-site deployment with OT team coordination and training
Unidirectional Only
Hardware physics, not software
100+ Connectors
PI, OPC, Modbus, Syslog...
Cloud Ready
Safe OT-to-cloud extension
OT Expertise
Power, oil & gas, defence

Waterfall Deployment Services

From OT data flow mapping through hardware integration and ongoing connector maintenance.

OT Data Flow Mapping

Document every data flow crossing the OT/IT boundary: source system, protocol, data type, frequency, and direction. This drives gateway sizing, connector selection, and policy definition.

Gateway Hardware Deployment

Waterfall UDS (Unidirectional Security Appliance) racking, cabling, TX/RX fibre connection, and initial configuration. Ogma performs hardware installation with your facilities and OT teams.

Industrial Connector Setup

Configure software connectors for OSIsoft PI replication, OPC-DA/UA polling, Modbus tag collection, Syslog forwarding, database replication, and file-based transfer. Each connector is validated against your source system.

Cloud & IT Integration

Connect the Waterfall output side to AWS IoT, Azure IoT Hub, IBM Watson IoT, or on-premises IT systems. Ogma configures the receiving pipeline, data transformation, and storage for historian and analytics workloads.

Security Architecture Review

IEC 62443 zone and conduit documentation for the Waterfall-protected boundary. Threat model update, network diagram, and security policy documentation for your OT security governance programme.

Ongoing Connector Support

Connector software updates, connector configuration changes as SCADA/historian changes, performance monitoring, and L2 incident support. SLA-backed with OT-aware engineers who understand operational constraints.

Frequently Asked Questions

A Waterfall unidirectional gateway uses hardware — not software rules — to enforce one-way data flow. The TX (transmit) side has only a laser; the RX (receive) side has only a photodetector. There is no physical medium for data to travel in the reverse direction. A firewall is software; software has vulnerabilities, misconfigurations, and can be exploited. Waterfall cannot — no remote exploit can cross hardware physics.

Waterfall ships software connectors for 100+ industrial protocols and applications: OSIsoft PI historian replication, OPC-DA/UA, Modbus, Syslog, SNMP, database replication (Oracle, SQL Server, Db2), file replication, and screen-scrape (for legacy HMI systems with no API). Ogma configures the appropriate connectors for your specific SCADA and historian landscape.

Waterfall hardware enforces one-way flow in a single direction. For bidirectional requirements, two separate Waterfall devices are deployed — one for each direction — with a controlled DMZ between them. The OT-to-IT gateway transmits historian data and alarms; the IT-to-OT gateway (with much more restrictive policy) carries only specific allowed data types such as time synchronisation or patch files after manual inspection.

Waterfall is deployed globally in power generation and distribution (coal, nuclear, renewable), oil and gas pipelines, water treatment, railway signalling, manufacturing, and defence. In India, NCIIPC guidelines for critical information infrastructure protection align with the principle of unidirectional gateways for highest-criticality OT systems.

Ogma follows a structured process: (1) OT/IT data flow mapping — what data needs to cross the boundary and in which direction, (2) Waterfall hardware sizing and connector selection, (3) Lab validation with your SCADA historian and IT systems, (4) Production deployment with parallel-run validation, (5) Training for your OT and IT teams. Typical deployment is 4–8 weeks depending on the number of data sources.

Yes. Waterfall Secure Access Hub (SAH) extends unidirectional data transfer to cloud platforms — sending OT data to AWS, Azure, or IBM Cloud for analytics and dashboarding, while physically blocking any cloud-originating commands from reaching OT systems. This is the recommended architecture for cloud-connected industrial IoT deployments where OT security cannot be compromised.