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Multi Domains, Multiple Classifications into One Environment

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Post Date

6 May 2022

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20220811 - SOC in a Box - 8in1@4x-8


Information sharing is a key and critical component of modern tactical systems and enabling this in a safe and secure manner is often thought of as extremely difficult.

The ability to cooperate between different coalition partners, organisations, or teams due to geographical constraints, classification and restrictions on connecting to partner systems is often hindered. 4Secure has developed an all-in-one cross-domain solution (CDS) that facilitates collaboration in a single workspace.


Utilising eight data diodes mounted in a custom-built enclosure designed to fit in a tactical pelican case, this solution enables partners and teams to share information from multiple disparate networks, using 4Secure’s TrustedFilter™ software suite to perform advanced content filtering and boundary protection, into a single communications node.

Whether for management and monitoring or for information sharing, the solution presents an organisation with the ability to tailor the information they produce, send it across the network boundary to a shared system, with the absolute certainty that:

• There is no ability for operators on the shared system to access information that has not been explicitly shared and transferred across the uni-directional gateway

• There is physical separation between the eight separate air-gapped input gateways.

Hardware Solution

The OPDS-1000 is a one-way data transfer solution built on patented data diode technology. It is a compelling, flexible, all-in-one data diode solution that supports up to 1,000Mbps of throughput.

The OPDS-1000 simultaneously supports the one-way transfer of multiple data types and functions.

For example, it can transfer files and images, stream video, send email alerts, transfer SNMP traps and Syslog messages, and support remote HMI screens. No competing product on the market offers the same range of capabilities in a single, easily deployable device.

The OPDS-1000 is also typically deployed at the edge of an operational network and contains the proprietary Owl data diode technology that physically allows data to flow in one direction. As a result, data generated within a system transfers across the network boundaries to remote users for monitoring, production, and information sharing activities.

Rack-Mounted Enclosure

4Secure has designed and developed a rigid enclosure that allows eight rack-mounted data diodes to be installed within close proximity.

Consideration of this maximised the limited space available by utilising custom fixings and mounting brackets to enable optimum heat dissipation, cable management and power unit placement.

Ultimately, the goal is to maintain the ability to meet rigorous field deployment requirements and an architectural approach that facilitates the integration of partners.


4Secure TrustedFilter™ framework is a set of software tools designed to enhance any OPDS platform, enabling a complete cross-domain solution. TrustedFilter™ has been designed and utilised to allow syntactic data checking before crossing the uni-directional gateway. In addition, it performs data-loss prevention, ensuring only authorised data is allowed to leave its host network.

TrustedFilter™ framework supports multiple protocols and data types, including but not limited to; XML and JSON schema validation within TCP streams and HTTP requests, granular HTTP request filtering, TLS termination, AMQP/MQTT and file transfer with enhanced content inspection (file-type checks, manifest checks and third-party filtering scripts).

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Want to know more about our data diodes, how they work and what is right for you? Book a consultation with one of our cyber security specialists to discuss your requirements.


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