What is a data diode and how does it work?
A data diode is hardware device that is often called a “unidirectional security gateway”. It is placed between two networks with different levels of security and controls the flow of information. Read more
Data diodes
Physically enforced cybersecurity based on optical technology
Quick links
Data diodes ensure secure, one-way data transfer by enforcing unidirectional flow between networks.
Unbreakable protection for data integrity and isolation
Data diodes protect critical systems from external threats, eliminate the risk of backchannel attacks, and help maintain data integrity by preventing tampering or unintended return traffic.
Ideal for use cases such as secure file import, production data export, monitoring, and logging - all without compromising network separation or compliance requirements.
Advenica data diodes – all hardware-based
Our data diodes are based on optical technology, ensuring separation of networks in hardware. A persistent one-way solution, immune to misconfiguration and malware.
Our powerful hardware-based data diodes cover all your needs for one-way data flow applications.
Data diode hardware
Our proxy software and services converts your bi-directional networks to uni-directional.
Data diode software
Data Diodes FAQ
What is a data diode?
A data diode is a hardware-based network segmentation product that ensures that data only flow in one direction. This prevents external systems from sending data back into a protected network, significantly reducing the risk of cyberattacks. Advenica's data diode portfolio is designed for highly secure environments. All Advenica data diodes are based on optical technology, physically ensuring one-way data flow.
Are data diodes expensive?
While a data diode may seem like a premium solution, its cost is minor compared to the financial and operational impact of a security breach. With minimal maintenance and administration compared to alternative technologies, it delivers long-term protection with low total cost of ownership — making it a smart, future-proof investment for any critical environment.
How much does a data diode cost?
We offer a large selection of data diodes starting at around €3000 CAPEX with final pricing depending on solution complexity and scope. Read more about pricing.
Do the data diodes have any certifications?
The relevant certifications and approvals are listed on the webpage for the specific product.
What is the difference between your data diodes?
There are several different data diode models depending on use case, compliance requirements and complexity of the solution. The two main categories are pure hardware diodes and diodes including proxy software. Within the hardware data diodes, there are different models depending on deployment environment and performance needs. DD1G and DD1000A both have 1Gbps interfaces, but different certifications. DDSFX-10G has support for 10Gbps and comes in an SFP form factor. DD1000i is our most popular data diode with built-in proxies. For industrial use, the DD500E is preferred and DD500E-R for railway trackside installations. For modular solutions, we offer standalone proxy software Data Diode Engine that can be combined with all hardware data diodes. Support for many unidirectional use cases are solved with our add-on Data Diode Services.
Which data diode should I choose?
The choice primarily depends on protocol requirements, assurance levels, and deployment environment. Contact us to find out which data diode suits your needs.
Why choose a data diode instead of a firewall?
Unlike software-based security controls, a data diode physically enforces one-way communication, making it immune to misconfiguration and significantly reducing the attack surface, making it a more secure solution than a firewall.
Are Advenica data diodes hardware-based?
Yes. Advenica data diodes use optical technology to physically enforce one-way data flow. Because the protection is hardware-based, it is not dependent on software configuration alone.
Can a cyber hacker bypass the one-way protection?
The purpose of a data diode is to physically prevent reverse communication. Unlike software-only segmentation approaches, the optical barrier enforces network separation at the hardware level, which can not be bypassed.
Can Advenica data diodes connect OT and IT networks?
Yes. Common use cases include:
• OT-to-IT data export
• Production monitoring
• Predictive maintenance
• Security log forwarding
• Industrial analytics
• Cloud data collection while maintaining network isolation.
Do Advenica data diodes require major network redesign?
Typically no. Both DD1000i and DD500E are designed to integrate into existing environments with minimal operational disruption.
What network speeds are supported?
• DD500E: 100 Mbps interfaces for industrial applications.
• DD1000i: 1 Gbps interfaces with integrated proxy capabilities.
• DDSFX-10G: Designed for 10 Gbps deployments.
Contact us
Book a demo, meeting or request a quote. We are at your service.
Rickard Nilsson
COO
