Remote Access: The Digital Gangway
Regulatory Context: IACS UR E26 (Section 4.2.6) requires that remote access to critical systems be controlled, logged, and restricted to authorized personnel only. This module focuses on eliminating “Always-On” backdoors.
On a modern vessel, OEMs and shore-side technicians often require access to HMIs for troubleshooting. However, an unsecured VPN or a forgotten TeamViewer session is a permanent invitation for ransomware. Security is not about blocking access; it is about controlling the gate.
Vessel-Initiated
The connection must be started by the ETO on the ship, never “dialed-in” from the shore without notice.
MFA Required
Static passwords are forbidden. All remote logins must require a second factor (Code or App).
Time-Limited
Access is granted for a specific window (e.g., 2 hours) and automatically revoked.
Implementing the OT Kill-Switch
There are two primary ways an ETO can ensure a “Default-Off” posture for remote access:
Keeping the vendor’s gateway or jump-host physically disconnected from the OT switch until the moment access is required. No cable = No breach.
Maintaining a specific firewall rule labeled “OEM-REMOTE-ACCESS” in a Disabled state, only toggled On after a formal request is signed.
ETO Best Practice: Closing the Gate
Never rely on the vendor to “log out.” To satisfy IACS UR E26 audit requirements, the ETO must verify session termination:
- Hard Kill: Manually disable the firewall rule or pull the physical bridge cable.
- Verification: Refresh the HMI user-list to ensure no active sessions remain.
- Audit Entry: Timestamp the Actual End Time in the TAG-OT-LOG-03 Log.
Compliance Documentation Previews
Standardized templates for managing remote access. View watermarked previews below; premium SOPs and fillable forms require the Pro Bundle.
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OT Password Policy & RBAC
Phase 2: Protect All vessels Satisfies: E26 §4.2.4 E27 §4.1 IEC 62443 IMO MSC-FAL.1 BIMCO v4 All vessels OT Password P...
