Public sector
Presentation across a domain boundary
The shared display is the only common component — and therefore the only channel connecting the domains.
- Area
- Data diodes
- Architecture patterns
- 1
- Products used
- 1
The problem
What makes it hard
A display or a projector is a bidirectional device. DDC, EDID, CEC and ARC are channels in both directions, and shared presentation equipment therefore joins together what is supposed to be isolated.
The only flow in this catalogue that is not IP traffic, and the one most often left out of the domain analysis. The meeting room is frequently the real gap in an otherwise correctly divided environment.
How it is built
Presentation surface across a domain boundary
The display is a shared, writable node between every domain connected to it.
See the full pattern- One-way path
- Data path
- Path that does not exist
In the catalogue
Equipment from the catalogue
Built from: HDMI Diode 60-00-9155.
Reading and references
Explained in
Named customer references are not published. What we can show is the solution area this environment belongs to, and the reasoning behind the design.
Environments
Environments with the same problem
The technology is the same; the buying process usually is not.
- Emergency call centreRound-the-clock operation with no maintenance window: whatever is installed has to be replaceable while it runs.
- Briefing roomA shared room is harder than a single workstation, and the bridge for an external client is a deliberate compromise that must be decided in advance.
- Training facilityStudents bring their own devices, and a room designed for teaching is designed to be connected to.
- Negotiation room in the private sectorThe threat is commercial rather than state-level, but the room is used by people who have never been briefed.
Next step
Describe your environment
If yours is close to this one but not the same, that difference is usually where the design decisions are. Tell us what it looks like.
Verified credentials
All certifications- Swedish Armed ForcesM-numbered equipmentMain supplier, Total Defence
- Government of SwedenSupplier to Swedish authoritiesPolice · FMV · FOI
- NATOCertified TEMPEST supplierSDIP-27 · Level A & B
- ISO 9001 14001ISO certifiedQuality & environmentDownload certificate (JPG)
- SOFFDefence industry memberExport control frameworks
- Made in SwedenDesigned & built in StockholmSecure supply chain
