energy distribution telemetry data diode featured image
10/05/2026

Energy sector telemetry: designing one-way paths from substations and remote sites

energy sector telemetry paths substations: practical guidance for secure one-way data flow architectures.

Summary: Remote generation, transmission, and distribution assets produce enormous operational data. This article outlines architecture considerations for moving telemetry out of operational zones without opening interactive remote paths.

Operational constraints

Energy operators often standardise on redundant communications and strict change control. Introducing non-interactive, outbound-only monitoring preserves separation between real-time control and enterprise analytics.

Patterns that work well

  • Historian and event feeds replicated one-way to an enterprise lake.
  • File-based exports of curated operational KPIs where streaming is not required.
  • Segmentation between vendor maintenance laptops and production VLANs—pair procedural controls with hardware directionality where risk warrants it.

Connexite resources

Start from the general diode guide, then map throughput needs to the ConnexONE family overview:

Guide to Data Diodes (PDF)
ConnexONE family datasheet (PDF)

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Deep Dive Guides, Energy, Vertical Solutions
data diode vs firewall featured image
10/05/2026

Data diode vs firewall in OT: when filtering is not enough

data diode vs firewall: practical guidance for secure one-way data flow architectures.

Summary: Firewalls are essential but bidirectional by nature at the enforcement plane. This article contrasts firewall-centric designs with hardware-enforced one-way links for OT monitoring and explains where each belongs.

The bidirectional reality of firewalls

Stateful inspection depends on seeing flows and maintaining session context. Operators continuously tune rules, patches, and vendor behaviour. That is acceptable for many enterprise boundaries—but in OT, reverse-path risk (management plane exposure, latent CVEs, misconfiguration under pressure) can be unacceptable for certain zones.

What a data diode changes

A diode constrains the discussion from “what packets might return?” to “no physical return path exists for exploit-bearing traffic.” Monitoring and file extraction can still occur outbound, while inbound remote-control surfaces are structurally removed.

Practical comparison framework

  • Use firewalls where bilateral communications are genuinely required and compensating controls are mature.
  • Add hardware-enforced one-way segments where monitoring must leave the plant but inbound paths must remain categorically blocked.

Official Connexite comparison document

Download the concise comparison brief:

Data diode vs firewall (PDF)

For model selection context, see also the ConnexONE datasheet (PDF).

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Deep Dive Guides, OT / ICS, Protocol Guides
network data diode featured image
10/05/2026

Network data diodes explained for engineers and architects

network data diode: practical guidance for secure one-way data flow architectures.

Summary: This article introduces how hardware-enforced, one-way data paths differ from general network controls, and when they belong in an architecture review. For full technical depth, use Connexite’s official guide (PDF) linked below.

Why one-way hardware matters

In operational technology (OT) and high-assurance IT, the recurring requirement is simple to state and difficult to implement in software alone: data may leave a sensitive enclave for monitoring or aggregation, but nothing may return as a control plane or reverse channel that could be abused. A network data diode implements that guarantee at the physical layer of the link, rather than as a policy rule on a bidirectional device.

Where teams deploy diodes

Typical patterns include:

  • Telemetry uplift — SCADA/historian data to enterprise lakes without exposing plant interfaces.
  • Cross-domain handoff — moving events or files from a classified or regulated segment to an operational analytics tier.
  • Vendor or remote access isolation — ensuring maintenance paths cannot become inbound command paths.

How this relates to ConnexONE

ConnexONE Data Diodes are positioned as guaranteed one-way paths with product variants aimed at different throughput and form-factor constraints. Before shortlisting a model, align throughput, interface type, and failure modes with your network design—the family datasheet summarises the range.

Download the official technical guide

For diagrams, terminology, and deployment considerations straight from the ConnexONE documentation set, download:

Guide to Data Diodes (PDF)

Related product line overview:

ConnexONE Data Diode Family datasheet (PDF)

Editorial note

Specifications and certifications evolve—validate any compliance claims for your sector with Connexite before relying on them in procurement or authority submissions.

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Data Diode, Deep Dive Guides, OT / ICS
video surveillance data diode featured image
10/05/2026

Video surveillance streams that stay one-way: protecting cameras from the networks that watch them

video surveillance data diode: practical guidance for secure one-way data flow architectures.

Summary: CCTV ecosystems mix brittle edge devices with fat streaming pipes—ideal for attackers who dream of pivoting from corporate VLANs back into physical security infrastructure.

Latency and integrity pressures

Security operations centres expect smooth video; SOC teams demand assurance. ConnexONE describes encrypted encapsulation and listener adapters mapping sources to sanctioned receivers.

Multi-destination fan-out

The brief notes scenarios where the same authorised streams must reach multiple consumers—still without reopening inbound routes through the diode.

Coordinate with physical security

Audio/video stakeholders often sit outside traditional IT—bring them into design reviews early.

Related Connexite resources

Download the full document

For diagrams, specifications, and the complete narrative as published by Connexite, use the official PDF:

Protocol guide — video surveillance (PDF)

Note: Treat numbers, certifications, and compliance mappings in the PDF as authoritative for procurement and audit; this article is editorial guidance only.

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IoT/Scada, Protocol Guides
SQL data diode featured image
10/05/2026

SQL, replication, and the database trust boundary: filtering queries before they leave the vault

SQL data diode: practical guidance for secure one-way data flow architectures.

Summary: Databases hold crown-jewel rows—yet analytics and disaster-recovery patterns constantly ask for copies. ConnexONE positions itself as a broker that understands SQL semantics enough to police dangerous statements.

More than tunnelled ODBC

Administrators define allow/deny logic at statement, table, and attribute levels so destructive or out-of-scope queries never ride the outbound lane.

Replication with hygiene

Filtered result sets can feed less-trusted zones or remote servers using familiar protocols—while the architecture narrative stays grounded in least privilege.

Coordinate with DBAs

This is not “set and forget”—schema drift and application upgrades require the rules to evolve responsibly.

Related Connexite resources

Download the full document

For diagrams, specifications, and the complete narrative as published by Connexite, use the official PDF:

Protocol guide — SQL (PDF)

Note: Treat numbers, certifications, and compliance mappings in the PDF as authoritative for procurement and audit; this article is editorial guidance only.

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Protocol Guides, SQL
industrial protocols modbus opc profinet featured image
10/05/2026

Industrial protocols on your diode: Modbus, OPC, PROFINET, and beyond

industrial protocols modbus opc profinet: practical guidance for secure one-way data flow architectures.

Summary: OT speaks dozens of field dialects. ConnexONE emphasises native industrial connectivity—virtual connectors feeding Guardian so telemetry can exit toward ERP, historians, or analytics without bolt-on hacks.

Why “packet-driven” matters

A flexible parsing model lets teams request new adapters when plants introduce niche devices—reducing vendor lock-in at the diode layer itself.

Near-real-time replication

The brief highlights continuous collection from PLCs, HMIs, DCS, historians, and onward transfer toward Postman-facing destinations.

Engineer-to-engineer tip

Validate signal lists and scan rates with automation leads before you promise dashboards—protocol support still needs sane engineering assumptions.

Related Connexite resources

Download the full document

For diagrams, specifications, and the complete narrative as published by Connexite, use the official PDF:

Protocol guide — industrial OT (PDF)

Note: Treat numbers, certifications, and compliance mappings in the PDF as authoritative for procurement and audit; this article is editorial guidance only.

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OT / ICS, Protocol Guides
MQTT data diode featured image
10/05/2026

MQTT across boundaries: lightweight telemetry without trading away directionality

MQTT data diode: practical guidance for secure one-way data flow architectures.

Summary: MQTT powers smart infrastructure everywhere—from factory sensors to building automation—thanks to compact publish/subscribe semantics. Crossing security domains still demands architectural sobriety.

Broker adjacency risks

MQTT brokers often become concentration points. ConnexONE describes broker-capable roles that collect publisher traffic and relay toward sanctioned downstream brokers—without pretending MQTT magically enforces trust.

Near-real-time with guardrails

The guide summarises how Guardian and Postman cooperate to keep topic flows coherent while preserving the diode promise.

Bring your topic map

Successful deployments start with data governance—know what each topic carries before you replicate it.

Related Connexite resources

Download the full document

For diagrams, specifications, and the complete narrative as published by Connexite, use the official PDF:

Protocol guide — MQTT (PDF)

Note: Treat numbers, certifications, and compliance mappings in the PDF as authoritative for procurement and audit; this article is editorial guidance only.

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IoT/Scada, Protocol Guides
file transfer across trust zones featured image
10/05/2026

Moving files across trust zones: how ConnexONE treats file transfer as a governed workflow

file transfer across trust zones: practical guidance for secure one-way data flow architectures.

Summary: File exchange sounds mundane until it becomes your organisation’s favourite covert channel. ConnexONE frames file movement as a reviewed, auditable pipeline—not anonymous drag-and-drop.

Why one-way file semantics matter

When sensitive zones must push packages outward—evidence bundles, log archives, signed updates—a diode-backed workflow prevents surprise inbound sessions masquerading as “responses.”

Guardian, Postman, policy

The brief introduces how transfers traverse validation, optional approval chains, and delivery to recipients or repositories—language your SOC can map to runbooks.

Integrate with governance

Pair technical controls with records-management policies so retention and classification stay coherent.

Related Connexite resources

Download the full document

For diagrams, specifications, and the complete narrative as published by Connexite, use the official PDF:

Protocol guide — file transfer (PDF)

Note: Treat numbers, certifications, and compliance mappings in the PDF as authoritative for procurement and audit; this article is editorial guidance only.

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File Transfer, Protocol Guides
wind farm cybersecurity featured image
10/05/2026

Wind farm cyber risk in depth: real incidents, architecture gaps, and diode mitigation

wind farm cybersecurity: practical guidance for secure one-way data flow architectures.

Summary: This deep dive expands on public incidents that disrupted turbine visibility and control ecosystems—then walks through how hardware-enforced one-way segmentation changes the calculus.

Attack patterns that keep CISOs awake

Ransomware against OEM IT estates, remote maintenance abuse, and upstream communications failures each underline dependencies between IT convenience and OT resilience.

Architecture at a glance

Understanding turbine controllers, field networks, and enterprise analytics lets you place diode segments where they surgically remove reverse paths for monitoring exports.

Deployment storyline

The guide narrates an example deployment and benefits—ideal background reading before you commission OT assessments.

Related Connexite resources

Download the full document

For diagrams, specifications, and the complete narrative as published by Connexite, use the official PDF:

Deep dive — wind farm cyber risks & ConnexONE (PDF)

Note: Treat numbers, certifications, and compliance mappings in the PDF as authoritative for procurement and audit; this article is editorial guidance only.

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Deep Dive Guides, Energy, Vertical Solutions
tourism hospitality data protection data featured image
10/05/2026

Tourism, privacy, and surveillance: protecting guest experiences while feeding honest analytics

tourism hospitality data protection data: practical guidance for secure one-way data flow architectures.

Summary: Resorts, attractions, and cities blend booking engines, physical security systems, and guest Wi-Fi into a single guest journey. Visitors expect magic—not data scandals.

Where friction appears

CCTV, access control telemetry, and operational dashboards must cross trust boundaries for safety teams and municipal partners. Each hop is another chance for misconfiguration.

Directional publishing as hygiene

The tourism brief argues for exporting operational insight without silently exposing attraction OT to inbound manipulation paths.

Brand-safe wording

Marketing and security teams should co-own messaging—privacy promises must match architecture.

Related Connexite resources

Download the full document

For diagrams, specifications, and the complete narrative as published by Connexite, use the official PDF:

Case study — tourism & leisure (PDF)

Note: Treat numbers, certifications, and compliance mappings in the PDF as authoritative for procurement and audit; this article is editorial guidance only.

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Case Study, Vertical Solutions