There, there. It’ll be okay.

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You’ll have to accomplish that with a firewall on the OS. A network firewall could restrict traffic based on ports, but your apps aren’t that predictable.

When they became hard to find, folks started to discover just how limited the Pi is compared to something like an ODroid. Plus, RPi started prioritizing their industrial customers over educational and hobby users that gave the Pi it’s popularity. Additionally, the ARM architecture can make it trickier to find boot/installer images for some distributions (though, this is a very small downside).

Debian foundation, built-in ZFS, decent web GUI, clusterable – all in all, a very good VMWare replacement.

Love seeing Proxmox so high on the host OS list.