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NIS2 Compliance for On-Premise IT/OT/IoT.

NIS2 requires network segmentation, access control, incident detection, and supply chain risk management. Access Gate enforces Article 21 measures on-premise, across IT and OT, with sovereign European technology. No data leaves your network.

Last reviewed: April 2026

France: start preparing now

The French transposition law (Loi Résilience) is working through the National Assembly and is expected to pass in 2026. ANSSI is encouraging organizations to begin compliance work now, without waiting for final promulgation. ANSSI will begin compliance audits three years after the law enters into force — meaning organizations that start today have the runway to do this properly. Talk to our team.

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Article 21 measures

Access Gate covers all 10 Article 21 security measures at the network layer. Deployed in hours on existing infrastructure, with no rewiring and no production impact.

What is NIS2 on-premise compliance?

NIS2 (Network and Information Systems Directive 2) is the EU cybersecurity directive that requires essential and important entities to implement risk management measures across their IT and OT infrastructure. On-premise compliance means enforcing these measures directly on your local network, keeping all data, logs, and policy enforcement within your facility. For organizations operating in regulated European sectors, this means sovereign technology with no cloud dependency.

Sovereign Technology

Made in Europe. Stays in Europe.

Trout Software is headquartered in Paris with offices in Dublin and Kingston, NY. Access Gate is developed in Europe, deployed on-premise, and operates with zero cloud dependency. All data, logs, and policy enforcement stay within your network perimeter. No data transits through US or third-country infrastructure. For organizations subject to EU data sovereignty requirements, this is not optional.

Aligned with ANSSI and ReCyF

In France, ANSSI leads the NIS2 transposition and will act as the supervisory authority. In March 2026, ANSSI published the ReCyF (Référentiel Cyber France) to guide organizations through implementation ahead of final transposition. Trout Software aligns with ReCyF objectives.

FAQ

NIS2 On-Premise FAQ.

Art.21

Article 21 security measures enforced by Access Gate at the network layer: segmentation, access control, incident detection, and continuous audit trail.

NIS2 applies to essential entities (energy, transport, health, water, digital infrastructure) and important entities (manufacturing, food, chemicals, waste, postal, research) operating in the EU. If you operate critical infrastructure or supply essential services, you are likely in scope. Member state transposition may expand coverage further.

Article 21 requires risk management measures including network segmentation, access control, incident detection, asset inventory, supply chain risk management, and business continuity. For OT environments, these measures must work without disrupting production and without requiring agents on legacy equipment.

Yes. Access Gate runs entirely on-premise. Policy enforcement, session logging, incident detection, and audit trail generation all happen locally. No data leaves your network. This satisfies both NIS2 requirements and EU data sovereignty expectations.

Essential entities face fines up to 10 million EUR or 2% of global annual turnover, whichever is higher. Important entities face up to 7 million EUR or 1.4% of turnover. Senior management can be held personally liable for insufficient risk management measures.

NIS2 expands the scope to more sectors, introduces personal liability for management, raises penalties, adds supply chain security requirements, and mandates 24-hour incident notification. It also removes the distinction between operators of essential services and digital service providers, replacing it with essential and important entity categories.

NIS2 requires organizations to manage supply chain risk and ensure security of their information systems. Using cloud services that transit data through non-EU jurisdictions creates legal and operational risk. On-premise deployment with European-developed technology eliminates this exposure.

Access Gate deploys in hours. It connects to your existing network without changes to switches, cabling, or IP addresses. Asset discovery begins immediately. Access policies and segmentation can be configured within days. Full Article 21 evidence generation is operational within weeks.

Yes. IEC 62443 zone and conduit architecture maps directly to Access Gate overlay segmentation. Organizations subject to both NIS2 and IEC 62443 can satisfy both with a single deployment. The same session logs, access policies, and segmentation baselines serve as evidence for both frameworks.

Yes. Any asset within the scope of your essential or important entity functions is subject to NIS2 obligations. OT assets that cannot support agents are protected at the network layer through Access Gate's overlay architecture, without modification to the equipment itself.

Yes. Article 21 explicitly includes supply chain security. Essential and important entities must ensure that critical suppliers maintain equivalent security standards. Access Gate documents and controls all third-party access to your network, providing the audit evidence your supervisory authority will request.

Organizations must notify their national competent authority within 24 hours of becoming aware of a significant incident. Access Gate provides pre-formatted incident reports with session logs, access records, and anomaly timelines ready on demand, reducing the time from detection to notification.

NIS2 is a regulatory compliance obligation with legal penalties. IEC 62443 is a technical standard for OT security architecture. They are complementary: IEC 62443 zone and conduit design maps directly to NIS2 Article 21 segmentation requirements. A single Access Gate deployment satisfies both.

Not yet. France has not completed transposition of NIS2 into national law. The Loi Résilience is expected to pass in 2026, after which implementing decrees will define the technical requirements. ANSSI will begin compliance audits three years after promulgation. However, ANSSI is actively encouraging organizations to start preparation now using the ReCyF framework published in March 2026. Organizations that wait for the final law will not have enough runway.

Start Your NIS2 Compliance Project.

Talk to the Trout team about your Article 21 obligations, facility requirements, and deployment options. European offices in Paris and Dublin.

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