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I Deployed My Own Cute Lil' Private Internet (a.k.a. VPC)
(austingil.com)
This is a most excellent place for technology news and articles.
It is common for security first infrastructures to put machines inside a local network without internet access and just connect a "bridge" pc with internet access to them for management or retriving data.
The vulnerability issue here is if the bridge pc runs Windows. Would be the weakest ring in the chain.