01What a gateway does
It sits between the OT network and the cloud: polling field devices, buffering during outages, transforming data, and publishing upstream. The Pi's Linux stack makes protocol coverage and buffering straightforward.
02Doing it securely
Segment the gateway from the control network, run a signed read-only OS, use TLS and per-device tokens, and ship updates over signed OTA. A patchable, observable gateway is more defensible than an unmanaged appliance.
Common questions
The ones we're asked on every first call.
When hardened — secure boot, read-only rootfs, TLS, segmentation — yes, and arguably more so than an unpatchable appliance, because you can actually observe and update it.
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