Securely Transfer
OT Data to a SIEM

With Hardware-Enforced Data Diodes

Get Started

Check out the below resources to learn more about how data diodes and SIEM platforms work together to securely transfer data one-way out of OT networks for asset monitoring in a SIEM platform.

Data Diodes & SIEM Platforms:
A Synergistic Combination

Critical infrastructure organizations have a need to securely transfer data from operational technology (OT) networks to SIEM platforms for comprehensive monitoring, analysis, and threat intelligence. Many organizations are implementing 24/7/365 threat monitoring and leverage SIEM platforms to consolidate data into actionable information. The main challenge organizations face is securely sharing data from OT networks with the SIEM platform. Because OT networks must have the highest level of security to prevent threats from entering, firewalls alone no longer suffice as a mechanism to share data due to the threats they can introduce. That is why organizations deploy hardware-enforced data diode solutions to securely share data with a SIEM platform.

Share Data Securely

Critical infrastructure organizations deploy data diodes to securely share data with SIEM platforms due to the secure, hardware-enforced nature of the solution. Owl data diodes are hardware-based electronic devices designed with two separate circuits–one send-only, and one receive-only–which physically constrains the transfer of data to one direction only and forms an “air gap” between the source and destination networks. This enables organizations to transfer data one-way out of OT to a SIEM platform securely for monitoring and investigation, without introducing risk to the OT network.

How it Works


multiple source networks to a single SIEM platform with a data diode between the connections


critical OT data with a SIEM platform through a hardware-enforced data diode


OT data from multiple source networks within a SIEM platform without the risk of threats gaining access to those network

SIEM Vendors Supported

Owl & Splunk Use Case

Owl and Splunk have a collaborative technology partnership and the Owl data diode add-on solution is confirmed to comply with Splunk’s approved architecture. The Owl and Splunk solution is tested and operational in multiple field installations. Special use cases like multiline events and long messages are supported. The use case diagram below showcases multiple source networks sharing data with the Splunk Indexer. The data from each independent source network travels through a secure, hardware-enforced data diode, to the WAN Network, and then to the destination Splunk Indexer. This enables organizations to share data from multiple networks with one SIEM platform. With data diodes deployed at the edge of the source networks, data can flow one-way out to the Splunk Indexer, without the risk of threats coming back into the source network. There are various architectures that can be supported. If you are interested in discussing your use case, please contact us and we are happy to determine the best architecture with you.


Securely Monitor OT Assets

One SIEM License for Multi-Site Deployments

Easy Management & Installation

Maintain Air-Gapped Architecture

Hardware Assurance

Long Technology Lifespan

Want to Learn More?

Complete this form to get in touch with an Owl expert. We are looking forward to learning more about your use cases and how we can help your organization secure OT to SIEM connections.