Access Gate v25.05.01
Dec 20th 2025
Trout Access Gate v25.05.01 introduces advanced control and collaboration features for managing secure access across industrial environments.
This release focuses on three key updates:
- Advanced Permission Management
- Access Screens
- Tailscale Integration
Click below to see a video presentation of release v25.05.01
New Features
Advanced Permission Management
Purpose: Empower administrators to define granular, context-aware access policies for each enclave.
Description:
The Enclaves section has been expanded with an Advanced Controls panel.
It enables administrators to apply conditional rules that dictate how, when, and from where a user or device can access protected resources.
Available Controls:
- TLS Required
- VPN Allowed
- Access Agreement
- Time Limit
Example Use Cases:
Temporary Maintenance Access
Grant a contractor access to a specific PLC enclave for a 2-hour window using Time Limit. Access is revoked automatically when the window closes.
Securing Legacy Equipment
Enable TLS Required to enforce encrypted communication between clients and legacy controllers that cannot natively support TLS.
Remote vs Local Policy Enforcement
Use VPN Allowed to ensure sensitive assets can only be reached from on-site networks, while allowing read-only dashboards via remote VPN.
Access Screens
Purpose: Introduce policy checkpoints and compliance validation before a user accesses sensitive systems.
Description:
The new Access Screens feature lets administrators configure on-screen prompts that appear before connecting to a protected asset.
Users must read and accept the policy — for example, a data-handling or safety notice — before proceeding.
Highlights:
- Display custom messages, warnings, or compliance text
- Capture acknowledgment logs for audit purposes
- Link Access Screens to the
- Apply screens globally or per-enclave
Example Use Cases:
Compliance Acknowledgment
Before accessing Controlled Unclassified Information (CUI) assets, users are shown a CMMC policy reminder. Acceptance is logged for compliance tracking.
Maintenance Safety Notice
Before connecting to production machinery, external contractors must accept a site-specific safety and isolation policy.
Change Control Messaging
Display an informational Access Screen during configuration changes or downtime, alerting operators before they connect.
Tailscale Integration
Purpose: Simplify cross-site connectivity and remote management through seamless integration with Tailscale.
Description:
Trout Access Gate now integrates natively with Tailscale, allowing your Access Gate to automatically join your existing Tailscale mesh.
This enables secure, authenticated connectivity across distributed sites and teams — without manual VPN configuration.
Highlights:
- Automatic registration into Tailscale mesh
- Synchronizes subnets, routes, and assets
- Leverages Tailscale’s identity-based authentication
- Works transparently alongside Trout’s enclave and permission models
Example Use Cases:
Multi-Site Mesh Connectivity
Each plant’s Access Gate joins the same Tailscale network. Admins can reach enclaves from headquarters through verified Tailscale identities.
Remote Troubleshooting
Field engineers connect to site assets via Tailscale while Trout enforces enclave-specific policies and logging.
Hybrid IT/OT Integration
Combine Tailscale for network reachability with Trout’s access controls for per-asset enforcement — achieving Zero-Trust coverage end-to-end.
UI and Performance Improvements
- Updated
- Improved Access Control Matrix with clearer hierarchy visualization
- Enhanced system stability and reduced configuration load times
Technical Notes
| Component | Update | Notes |
|---|---|---|
Enclaves | Enhanced | Added Advanced Controls for TLS, VPN, Time Limits, and Agreements |
Access Screens | New | Added policy acknowledgment interface |
Tailscale Integration | New | Native support for Tailscale route and subnet synchronization |
UI Framework | Improved | Optimized for performance on larger deployments |