OT Jump Server
Industrial/ICS 🏭
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Difficulty: premium
Definition
An OT jump server (bastion host) is a tightly controlled gateway that brokers all remote administration into the industrial network, enforcing MFA, least privilege, auditing, and session recording while blocking direct IT→OT connections.
Examples
- A vendor first connects to the IDMZ jump server with MFA; an approved, time-limited session then reaches a maintenance workstation in Level 3.
- Plant engineers use the jump host to RDP into an HMI terminal server; every keystroke and file transfer is recorded and reviewed.
Discover 🔎
An OT jump server centralizes and controls all remote access to operational technology. Instead of dozens of ad-hoc paths into PLCs, HMIs, and servers, everyone enters through a single, hardened gateway. This improves safety and security by enforcing strong identity checks, limiting what users can reach, and creating a complete audit trail of actions taken near the process.
Tip: The interactive version includes progress tracking, decks, and premium deep dives.