Waterfall
Unidirectional security gateways
Waterfall replaces firewalls at the OT boundary with hardware unidirectional gateways (data diodes). Data can physically travel only from the industrial network to IT. The hardware has no return channel for attacks.
What the portfolio includes.
Waterfall makes a line of unidirectional products for different OT protection tasks.
Key capabilities.
Hardware-enforced one-way flow
The hardware makes a return channel physically impossible, regardless of settings.
Stronger than a firewall
Unlike a firewall, a diode cannot be “opened” by a configuration error or an exploit.
Data available to IT
IT and analytics get OT data in real time with no risk to the industrial process.
Server replication
OT historians, databases and servers are replicated to IT for reporting and analysis.
Secure remote access
HERA provides controlled access to OT without a permanent network channel.
SOC integration
Sending OT telemetry to SIEM/SOC without opening inbound connections.
Standards compliance
Support for NERC CIP, IEC 62443 and national critical infrastructure protection rules.
Cloud analytics
Secure delivery of OT data to the cloud for analytics and predictive maintenance.
Who uses Waterfall and how.
Energy
Isolating ICS at power plants and substations while sending data to IT/SCADA historians.
Oil, gas and chemicals
Protecting hazardous plants from remote attacks while keeping monitoring in place.
Water and utilities
Isolating water supply and treatment systems from external networks.
Feeding the SOC
Secure delivery of OT data to the SIEM with no return channel for attacks.
Remote access to OT
HERA for secure maintenance without a permanent network connection.
Critical infrastructure compliance
Meeting the segmentation and protection requirements for critical infrastructure.
Systems and standards Waterfall supports.
Waterfall compared with a firewall and an air gap.
| Capability | Waterfall (diode) | Firewall | Air gap |
|---|---|---|---|
| OT → IT data transfer | ✓ | ✓ | - |
| Return channel for attacks | No (hardware) | Possible | No |
| Vulnerable to misconfiguration | No | Yes | No |
| Real-time data access | ✓ | ✓ | - |
| Critical infrastructure compliance | ✓ | Partially | ✓ |
| Approach | Hardware diode | Filtering rules | Full isolation |
A diode gives you the protection of an air gap and still keeps data available. Ask CYBER BOOST about your case.
Frequently asked questions
What is a unidirectional gateway (data diode)?
Why is this better than a firewall?
Will IT and analytics still get OT data?
Who deploys Waterfall in Uzbekistan?
Vendors in the OT / IoT Security category.
Request a Waterfall demo
We reply within one business day.

