Secure Operation Twin: Proxy & Secure Critical Machine, In Place.
Deploy resilient industrial proxies in front of the assets that matter, putting compute on the wire to secure legacy and third-party systems fully, with no downtime and no rewiring.
A Secure Operation Twin puts industrial proxies directly in front of a machine. Every packet in and out passes through a controlled compute layer on the wire, so the asset is protected with no patching, no agent, and no downtime. Legacy and third-party systems included.
Put security on the wire, not on the endpoint
Most OT assets cannot run an agent, cannot be patched, and cannot be re-addressed without risking production. The Secure Operation Twin becomes the asset's network presence: it terminates connections, authenticates the user, enforces what the protocol is allowed to do, encrypts the link, and records the session, then proxies the cleaned traffic onward to the real machine.
Because the compute runs in-path, it does not depend on the machine cooperating and it does not depend on the cloud. To the rest of the network, the twin is the machine, which is how it can protect equipment that has no security capability of its own.
From zone-level buffer to per-machine control
An industrial DMZ protects the boundary between IT and OT with a shared buffer zone. It is valuable, but it is coarse: everything inside the zone still trusts everything else inside the zone. The Secure Operation Twin lets you scale that same idea down to the individual machine, so each critical asset gets its own controlled boundary rather than sharing one.
In practice teams use both: a DMZ at the site edge, and Secure Operation Twins in front of the specific assets that matter most. This is how you move from zone-level segmentation toward the asset-level control that IEC 62443 and Zero Trust call for, without an overlay redesign or VLAN rework.
Full protection for the assets you cannot change
The twin secures anything reachable over the network, including the systems that are hardest to protect any other way.
Compute On The Wire
The Access Gate provides compute directly in the data path. It does not depend on the machine cooperating, and it does not depend on the cloud.
Protocol-Aware, Not A Tunnel
It terminates the session and inspects the protocol, so it can allow Modbus, OPC UA, RDP, SSH, or HTTP while constraining exactly what each is allowed to do.
Secures Legacy In Place
Equipment that cannot be patched, agented, or taken offline is protected without changing the machine itself.
Controls Third-Party Systems
Vendor and black-box appliances get identity, least privilege, and a recording of exactly what was done.
Scales The iDMZ To The Machine
Give each critical asset its own controlled boundary instead of sharing one buffer zone across everything.
No Downtime, No Rewiring
Placed transparently in the path to the asset, it cuts over without IP renumbering or VLAN redesign.
Firewall, agent, or Secure Operation Twin
| Capability | Firewall / DMZ | Endpoint agent | Secure Operation Twin |
|---|---|---|---|
| Where security runs | At the zone boundary | On the endpoint | In-path, in front of the asset |
| Works on legacy assets | Coarse, zone-wide only | No, cannot install | Yes, no change to the machine |
| Third-party / black-box devices | Trusted once inside the zone | No control | Identity, least privilege, recorded |
| Granularity | Zone level | Host level | Per machine, per protocol |
| Deployment impact | Re-architecture | Rollout + patching | In place, no downtime or rewiring |
Placed in the path, cut over without rewiring
Deployment is designed to be non-disruptive: you place the twin in the path to the asset and cut over without IP renumbering. The documentation covers the deployment models and the traffic-control options.
Non-disruptive by design.
No rewiring, no downtime.
Choosing a Secure Twin deployment
Compare the deployment models and pick the right one for the asset and the network.
Deploy a Secure Twin with DNS
Route clients to the twin through DNS, so they reach the proxy transparently.
Secure Twin port for active traffic control
Use the active traffic-control port to enforce policy inline on the asset's traffic.
Source-based routing
Steer only the traffic you choose through the twin with source-based routing.
Secure Operation Twin, answered
It is an in-path industrial proxy the Trout Access Gate places directly in front of a targeted machine. Every connection to and from that asset passes through a controlled compute layer on the wire, so the asset can be secured fully without changing the machine itself.
An industrial DMZ protects one shared boundary between IT and OT, where everything inside the zone still trusts everything else. The Secure Operation Twin scales that idea down to the individual machine, so each critical asset gets its own controlled boundary. Teams typically use both together.
Yes. That is the point. Because the twin becomes the asset's network presence and applies identity, policy, encryption, and recording on the wire, it protects legacy controllers and vendor appliances that have no security capability of their own.
No. The twin is placed transparently in the path to the asset and cuts over without IP renumbering or VLAN redesign. The deployment models and traffic-control options are covered in the documentation.
No. The compute runs in-path on-premise. There is no dependency on an external service to broker or inspect the traffic.
Access Gate secures your assets first, then exposes the simple services your teams and vendors actually want, so they run through the sanctioned path, not around it.
OT runs through you, not around you.