OT backup and restore testing: prove the recovery path
Inventory the files and dependencies needed to recover a control system, set recovery objectives, and test restoration on an isolated target.
Industrial DMZ
Buffer segment between IT and OT networks.
The industrial demilitarized zone: a buffer network segment between enterprise IT and OT, hosting historians, jump hosts, update servers, and integration brokers. No direct IT-to-controller traffic crosses it.
See also: Zones and conduits · Purdue model
Use the concept: Subnet calculator · OT asset inventory template · OT backup & restore test template
In depth
OT incident response: a ransomware playbook for plants that can't just stop
Build an OT incident response plan that respects process safety — roles, containment without shutdowns, backups that restore, and tested playbooks.
Safety instrumented systems: the boundary between control and protection
Basic SIS and SIF concepts, independence, SIL targets, proof testing, bypasses, and the questions to answer before connecting safety to a control system.