hardDesignScenarioMidSeniorStaff
How would you get sensor and production data off the plant floor into a cloud platform without weakening the control network?
5 min readUpdated 2026-08-15
Answer
Short answer
Segment the network into zones, put a broker or historian replica in a DMZ between plant and enterprise, and have the plant side initiate every connection outbound so no firewall rule ever permits traffic into the control zone.
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Likely follow-ups
- The plant needs to send a recipe change down from the cloud. How does that request cross the boundary?
- How do you handle a vendor who insists their gateway needs an inbound VPN tunnel for support?
- What monitoring would tell you the boundary had been violated?
- The historian is in the plant zone and your analytics needs five years of it backfilled. How?
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