Would it be possible to run and manage two WAN connections each with their own LAN subnets via two independent NICs? I want total isolation for each WAN/LAN - they shouldn't know each other exist or be able to communicate.
1) Is it possible?
2) Would it be difficult to achieve? Any pointers are greatly appreciated - converting from pfSense in the process.
1) I think it is.
2) Once you have configured your WANs and your LANs you can use policy routing to force packet from a specific LAN to go through a specific WAN.
You should make firewall rules on each LAN that allow trafic to the outside and use the GATEWAY option at the bottom of the "rule" page.
Cheers...