@notverypunny said in OT / IoT asset management:
My main concern for the present effort is getting an accurate picture of what SCADA / OT etc devices we've got in the environment so that I know if action has to be taken or flagged to the appropriate controls group when vulnerabilities are flagged online.
Sounds like your needs are primarily security centric.
Give cyberx a look then. It's now called Microsoft Defender for IoT but it covers SCADA and other OT tech as well. https://azure.microsoft.com/en-us/services/iot-defender/#features
I do have a lot of experience with documentation of these kinds of system in a variety of industries, like manufacturing industry, pulp and paper, chemical plants etc.
In a lot of cases automatic discovery can be problematic and won't work.
If you have a lot of control systems, most of the manufacturers will have tools that can keep track of their own devices. Especially when it comes to DCS systems that you'll find in larger installations.
You will likely need some kind of hybrid approach.