Reach the Plant Floor. Never Open It Up.
Industrial systems weren't built for the internet. Yet vendors, integrators, and remote engineers need access every day — and every VPN, jump host, and exposed RDP port is another path into your most safety-critical environment. Fortified360 brokers every OT session through an isolated workspace. The OT network stays air-gapped. The operator gets the access they need. No VPN. No exposed port. No regret.
Every remote-access path into OT is a path attackers want.
OT environments are safety-critical, availability-driven, and built on technology that was never intended to be on a network — let alone the internet. Yet OEM service contracts, third-party integrators, and remote engineering demand access daily. The accommodations made to allow that access are exactly the attack surface adversaries target.
VPNs and jump hosts collapse the air gap
Every VPN tunnel and jump host is a tunnel into the OT network. One compromised credential and the attacker is operating on the same segment as the PLCs.
Legacy systems can't be patched
HMIs on Windows 7, historians on Server 2008, OEM tools that vendor-lock to specific OS versions. Modernizing them risks the production line. Patching them isn't possible.
Vendor access has no audit trail
OEM remote sessions happen on the vendor's terms, with the vendor's tools, and the vendor's logs. When an incident happens, the evidence trail belongs to someone else.
Brokered access. Air-gap preserved. Every action recorded.
Fortified360 sits between the operator and the OT system. Operators land in an isolated workspace with only the tools they need; the workspace makes the brokered connection to the OT system; the OT network never sees the operator directly. The air gap stays intact.
Operator authenticates & requests access
SSO with MFA. Just-in-time access requests scoped to a specific system, time window, and mode (read / maintain / view).
Workspace spins up with required tooling
An isolated, ephemeral workspace pre-provisioned with the OEM tools, browsers, and clients needed for the target system — nothing more.
F360 brokers the OT connection
The workspace reaches the OT system through a one-way, protocol-aware broker. The operator's device never touches the OT network.
Session recorded. Access expires.
Every keystroke, mouse movement, and command captured for safety and audit. Access auto-expires — or is revoked instantly with one click.
Engineered for the Purdue model — not retrofitted to it.
Air-gap preserved
The OT network never sees the operator's device. F360 brokers traffic through a controlled, one-way pathway that respects Purdue-model segmentation.
Just-in-time access
Access is requested per system, per task, per time window. Standing privilege is eliminated. When the window expires, access is gone.
Forensic session recording
Every keystroke, click, and command captured with cryptographic integrity. Safety investigations, audit, and incident response all start from the same evidence base.
Mode-of-access controls
Read-only viewing for auditors, supervised maintenance for OEMs, full engineering for internal staff — each scoped per session, per system, per role.
Multi-protocol broker
RDP, SSH, VNC, HTTPS, and OEM-specific protocols brokered through the workspace. No native client on the operator's device.
One-click revocation
Mid-session anomaly? Vendor incident? Revoke access in one click — the workspace is destroyed, the connection torn down, and the OT system isolated again.
If it has an interface, we can broker access to it.
From a brand-new SCADA console to a Windows XP HMI an OEM refuses to support, Fortified360 brokers access to every layer of the OT stack — without forcing you to modernize what runs your operation.
HMIs & engineering stations
// human-machine interfaceWindows-based operator panels and engineering workstations from any vintage — XP, 7, 10 — brokered without exposing them to the corporate network.
PLCs & controllers
// programmable logic controllersVendor-specific controller programming tools, ladder-logic editors, and diagnostic clients reachable only through the brokered workspace.
SCADA systems
// supervisory control & data acquisitionMaster stations, dispatcher consoles, and process-control networks across L2–L3 of the Purdue model — access scoped per role and per task.
RTUs & field devices
// remote terminal unitsEdge devices in substations, well pads, and remote sites — reachable from one centralized broker without exposing each site individually.
Historians & MES
// process historians & manufacturing executionTime-series process data, manufacturing-execution systems, and quality-management servers — including legacy Windows Server vintages.
BMS & building automation
// building management systemsHVAC controllers, access-control panels, lighting controls, and life-safety systems — including BACnet, Modbus, and proprietary fieldbus reachability.
Air-gapped systems
// physically isolated networksTruly isolated environments reachable only via mediated, one-way data brokers — preserving the air gap while enabling controlled diagnostics.
IoT & edge devices
// connected industrial sensorsModern industrial IoT, edge gateways, and sensor hubs — brokered through the same workspace, with the same audit trail and same revocation controls.
Note on connectivity: Fortified360 brokers protocol-level access through an isolated workspace; specific OT vendors, protocols, and field-device families are validated as part of the discovery workshop. Air-gapped and safety-instrumented systems are accessed only through customer-approved, mediated paths that preserve existing segmentation policies.
Six scenarios where OT access risk meets the business.
OEM & vendor remote service
Equipment manufacturers and integrators need to maintain, patch, and diagnose your installed base — on your terms, with your audit trail.
Remote engineering & commissioning
Engineers in central or regional offices supporting plants worldwide — with full tooling access and zero standing privilege.
NIS2, CMMC, & ICS regulations
European NIS2, US CMMC L2, NERC CIP, IEC 62443 — all demand documented, audited, controlled remote access to OT.
Legacy & unsupported OT
Windows XP HMIs, Server 2008 historians, vendor-locked OS images. Wrap them, isolate them, broker access to them — without modernizing.
Post-incident hardening
After an OT-impacting event — ransomware, insider, or vendor compromise — the board mandates controlled access. F360 is the answer.
M&A & multi-site standardization
Acquiring a portfolio of plants with disparate OT vendors? F360 normalizes remote access across every site without rebuilding their networks.
Tunnels into OT — or brokers in front of it.
The traditional approach to OT remote access drills tunnels through your firewall. Every tunnel is a permanent attack surface. Fortified360 inverts the model: nothing enters the OT network — the workspace reaches out from the corporate side, brokers the session, and tears it down on exit.
Traditional Approach
VPN + jump host + standing accounts
- Persistent VPN tunnels punch through the air gap
- Jump hosts become attack-surface targets themselves
- Standing vendor accounts never get fully revoked
- OEM uses its own tools, its own logs, its own retention
- Legacy HMIs and historians stay exposed forever
- One compromised credential reaches the plant floor
Fortified360
Brokered access. Air-gap preserved.
- No persistent connections — sessions are spun up per task
- The workspace, not the operator, talks to the OT system
- Just-in-time access — standing privilege eliminated
- One unified audit trail — your tools, your logs, your retention
- Legacy systems wrapped, never modernized under fire
- Credential compromise hits the workspace, never the OT plant
Supports the controls of
Close every remote-access path into your plant.
Book a 30-minute OT review and we'll map your current vendor, integrator, and engineer access paths against a Fortified360 broker model. See exactly where the exposure is — and how to close it.
Or reach us directly: info@fortified360.net