Connecting remote assets, safely

A remote asset is usually connected for three different reasons, and treating them as one is where risk creeps in. Telemetry collection is mostly outbound and low-sensitivity. Remote maintenance needs interactive access but only occasionally and to known people. Control-system access is the sensitive one, and it should be the most restricted, reachable only by the right systems, over a tightly controlled path, never simply because the site has a connection.

A reference architecture keeps these apart: telemetry flows to its collector, maintenance access is brokered and logged, and the control path is isolated and reachable only by what genuinely needs it. The guiding principle is least exposure, so that a connection for reading data never becomes an open door to the operational network.

Remote sites rarely have good fixed lines, so cellular connectivity is common, and a private, isolated path keeps asset traffic off the public internet. Buffering telemetry through a loss of communications, and recovering cleanly afterwards, matters when a site may be out of contact for a while.

Netavo provides multi-network IoT SIMs on its own mobile core and a private APN, which suit dispersed remote-asset estates. Netavo provides the connectivity architecture; operational-technology integration, managed security controls and the safety design of the control system remain with the operator and its system suppliers.