Voltline Energy needed to connect operational technology to modern analytics without exposing control systems to the internet.
Years of growth had added remote access routes for vendors and engineers, and many were undocumented. In an environment where availability comes first, every change had to be carefully planned around live power distribution.
Assessment
We mapped every connection between IT and OT networks using passive techniques that posed no risk to live systems, and identified 23 unmanaged remote access paths along with several flat network zones.
Segmentation
A layered architecture isolated control systems, with monitored jump hosts for vendor access. Changes were staged during planned maintenance windows and rehearsed in advance with the operations team.
Results
All unmanaged paths were closed and the provider now has real-time visibility of OT network activity. Vendors reach only what they need, sessions are recorded, and analytics data flows out through a controlled, one-way route.
They understood that in our world, availability comes first. Security improved without a single unplanned outage.
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