More praise for the
$579 i5-powered firewall barebone featuring no less than six Intel Gigabit Ethernet ports: "
This is a protectli like device used to create a virtualized pfSense router. I use xcp-ng as the hypervisor and installed pfSense as a Virtual Machine. Ubuntu is additionally installed as another virtual machine within the hypervisor and the Xen Orchestra Community edition is installed within Ubuntu. Xen Orchestra acts as a control mechanism of the xcp-ng machine where snapshots or backups or created and exported to a local FreeNAS box"
Source:
PCPartPicker