Control who can access your systems, from remote to LAN access

NIS2 access control for
on-premise systems

NIS2 access control
on-premise

Access Control Challenge

Trout Access Gate Features

Controlling access across LAN and remote is inherently complex

Controlling access across LAN and remote is inherently complex

In most on-premise and industrial environments, access control is split across multiple mechanisms: internal network rules, VPNs, jump hosts, vendor tools, and ad-hoc exceptions.

Each solution solves part of the problem, but together they create a fragmented access model that is difficult to reason about, operate, and document over time.

Under NIS2, this fragmentation becomes a compliance and operational risk.

NIS2 makes cybersecurity a board-level responsibility, with direct accountability for leadership.

Trout provides a simple, on-premise way to deliver this visibility, control, and evidence without agents or disruption.

Control access across both local and remote connections
Avoid standing privileges and over-permissive access
Reduce configuration drift and manual exceptions
Maintain consistent controls across IT and OT systems
Document access decisions and enforcement over time

Trout Access Gate capabilities

Trout Access Gate Features

A single point of control for on-premise access

A single point of control for on-premise access

Trout Access Gate provides a central access control and enforcement point inside the network.

Instead of managing access separately across LAN rules and VPNs, IT teams define and enforce access policies in one place.

Controls are enforced on-premise, without agents and without redesigning the network.

Single access control point

Centralizes access enforcement for IT, OT, and DMZ systems, reducing tool sprawl and configuration drift.

Granular access policies

Defines access by user, group, system, and service, rather than broad network reachability.

Protocol-level control

Restricts access to specific protocols instead of full network access.

Time-bound access

Grants access for a defined duration, limiting standing privileges and reducing long-term exposure.

Integrated VPN workflows

Access Gate acts as a bastion for VPN access, providing control and visibility.

Operational Impact

Trout Access Gate Features

From broad access to controlled exposure

From broad access to controlled exposure

Connecting Trout Access Gate
Connecting Trout Access Gate

NIS2 increases accountability around who can access critical systems and how that access is managed over time.

Trout replaces flat VPN access and manual exception handling with a single on-premise control point that enforces, monitors, and records access continuously.

For IT teams, this means:

  • Reduced attack surface

  • Faster containment during incidents

  • Clear visibility into who accessed what and when

  • Defensible, repeatable access control for audits

Your stack. Your data, on-site.

Integrates locally with your network, servers & equipment

Unify
Dell
Linux
Defender
Fortinet
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Reviews

They have deployed Trout Access Gate with success

Reviews

They have deployed Trout Access Gate with success

FAQ

FAQ

How Trout Access Gate Secures On-Premise Systems & Supports NIS2

How Trout Access Gate Secures On-Premise Systems & Supports NIS2

What does NIS2 require in terms of asset inventory?

NIS2 expects organizations to maintain awareness of the systems supporting essential and important services. Practically, this means identifying connected assets, understanding their role and exposure, and being able to demonstrate that this visibility is maintained over time.

What does NIS2 require in terms of asset inventory?

NIS2 expects organizations to maintain awareness of the systems supporting essential and important services. Practically, this means identifying connected assets, understanding their role and exposure, and being able to demonstrate that this visibility is maintained over time.

Why are spreadsheets or CMDBs not sufficient for NIS2?

Static inventories are typically outdated, incomplete for OT and legacy systems, and disconnected from actual network behavior. NIS2 assumes continuous risk management, which requires visibility based on real activity rather than periodic declarations.

Why are spreadsheets or CMDBs not sufficient for NIS2?

Static inventories are typically outdated, incomplete for OT and legacy systems, and disconnected from actual network behavior. NIS2 assumes continuous risk management, which requires visibility based on real activity rather than periodic declarations.

How does Trout Access Gate discover assets without scanning?

Trout Access Gate observes live network traffic at enforcement points. Assets are identified because they communicate, not because they respond to probes. This passive approach is safe for OT environments and does not disrupt operations.

How does Trout Access Gate discover assets without scanning?

Trout Access Gate observes live network traffic at enforcement points. Assets are identified because they communicate, not because they respond to probes. This passive approach is safe for OT environments and does not disrupt operations.

Does this work for OT and legacy equipment?

Yes. The approach is agentless and does not require changes to PLCs, HMIs, appliances, or vendor-managed systems. Visibility is derived entirely from network-level observations.

Does this work for OT and legacy equipment?

Yes. The approach is agentless and does not require changes to PLCs, HMIs, appliances, or vendor-managed systems. Visibility is derived entirely from network-level observations.

What type of asset information is collected?

For each asset, Trout can track network presence, observed role, zone, communication peers, and historical activity. This produces a runtime view of the environment rather than a static inventory.

What type of asset information is collected?

For each asset, Trout can track network presence, observed role, zone, communication peers, and historical activity. This produces a runtime view of the environment rather than a static inventory.

Can this help during an incident or NIS2 reporting event?

Yes. During an incident, IT teams can immediately restrict permissions to block unintended communications and quickly modify security enclaves to quarantine affected systems with a single action. At the same time, retained asset and communication history allows teams to scope impact accurately and support NIS2 reporting with evidence of both exposure and response actions.

Can this help during an incident or NIS2 reporting event?

Yes. During an incident, IT teams can immediately restrict permissions to block unintended communications and quickly modify security enclaves to quarantine affected systems with a single action. At the same time, retained asset and communication history allows teams to scope impact accurately and support NIS2 reporting with evidence of both exposure and response actions.

Does Trout require cloud connectivity to provide visibility?

No. Trout Access Gate operates fully on-premise. Visibility and inventory are maintained locally, which is suitable for environments with data residency, availability, or connectivity constraints.

Does Trout require cloud connectivity to provide visibility?

No. Trout Access Gate operates fully on-premise. Visibility and inventory are maintained locally, which is suitable for environments with data residency, availability, or connectivity constraints.

Key takeaways

Key takeaways

Summary of Trout Access Gate and NIS2 Coverage

Trout Access Gate helps organizations meet NIS2 visibility and asset-management requirements by providing continuous, on-premise insight into IT and OT environments. It passively observes live network traffic to automatically identify connected assets, their roles, and their communication flows, without agents, scans, or changes to legacy systems.

This real-time inventory replaces static spreadsheets and periodic audits, giving IT teams an accurate view of systems supporting essential and important services.

During incidents, teams can scope impact based on actual activity and take immediate action by restricting permissions or modifying security enclaves to quarantine affected systems.

The result is a defensible, repeatable foundation for NIS2 risk management and reporting, suitable for industrial sites, regulated facilities, and other on-premise environments.

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Specialized use cases

Zero-Trust security to protect IT/OT/IoT & Legacy Industrial Systems. Delivered as a plug-and-play appliance, no agents and no operational downtime.