Passively-cooled Apollo Lake x86_64 computer (e.g. from Compulab) with wifi and two Ethernet ports running a mainstream distro with proper security updates (e.g

Passively-cooled Apollo Lake x86_64 computer (e.g. from Compulab) with wifi and two Ethernet ports running a mainstream distro with proper security updates (e.g. Ubuntu). Self-configured dnsmasq, ufw and hostapd.