Move the Data.
Remove the Attack Path.
Data diodes are the hardware-enforced protection secure environments need and this page explains how they help critical infrastructure eliminate the attack path that traditional firewalls cannot.
One-Way Transfer by Design
A data diode is a hardware-enforced device that allows data to move in one direction only, creating high-assurance segmentation between networks of differing trust levels. Unlike firewalls or software gateways, it reduces exposure by eliminating the conditions that enable backchannels and bidirectional flow. In critical environments where IT, OT, and cloud intersect, unidirectional flow is a resilience mandate.
Hardware-Enforced Segmentation
True one-way communication governed by the laws of physics, removing the return path and reducing backchannel access risk into critical networks.
Built for OT and IT Integration
Support for industrial and enterprise protocols plus integration into monitoring and analytics workflows, including tools like Splunk and AVEVA PI.
Resilience and Assurance
High-availability options, regulatory-ready certifications (for example EAL4+ and C1D2), and 24x7 support for mission-critical operations.
Making Sense of Data Diodes in Minutes
Playlist
4 videos- Why Data Diodes are Replacing Firewalls in OT?
Why Are Data Diodes Hard for Hackers? | One-Way Transfer, Dual Admin, Dongle Locks
How Do Data Diodes Secure Data Center OT Systems? | One-Way Monitoring and Air-Gap Explained
How Do Data Diodes Improve OT Network Security? | One-Way Transfer vs Firewall Misconfigs
Playlist
1 video
How Do Data Diodes Help Against AI-Generated Threats?
Data Diodes Help Meet Compliance Standards
Featured Resources
BrochureData Diodes for Secure IT Data Transfer
BrochureMetaDefender Netwall Series
GuideThe Ultimate Guide to Data Diodes
GuideData Diode Comparison Guide
E-BookBeyond the Firewall: Preserving the Air Gap While Keeping OT Networks Secure
Protect Critical Operations
with Unified Cybersecurity
See how peers harden file flows with MetaDefender Optical Diode: Real Deployments & Measurable Outcomes.
Proven Deployments in Energy and Utilities
Protect substations and plants—including air-gapped sites—while enforcing media authorization and capturing audit-ready logs.
Proven Deployments in Manufacturing
Standardize scan-before-use on the plant floor, block hidden payloads in vendor media, and keep engineering workstations clean.