* Create a immutable, WORM-Like Network-Share that holds REALLY!!! sensitive data like desaster-recovery-plans, password databases, network-plans, all the data you need in worst case and that should not be encrypted by any ransomware.
* When ransomware locks down your systems, this is your machine to go, plug in a console and start recovery.
* When sealing the vault, you can not access it over ssh any more so no ransomware can access the system.
* You should NOT NOT NOT NOT have a KVM-Console connected because this can be used to access the system over the network
* Place this machine on something like an Intel NUC, paint it red and put it into a safe place.
* Create any job to copy your DR-plans there regular.
* It uses cron-apt to update the system and reboots at 6 in the morning to keep kernel up to date