Follow the guides at https://pon.wiki/ for replacing your ISP modem with a sfp module running custom firmware. The sfp module will require some sort of active cooling, I bought a 3D printed bracket and fan from their discord server. You can also get a sfp to Ethernet media converter if your firewall does not have sfp:
https://www.amazon.com/gp/aw/d/B0FCFWGWHT
These work great as a firewall:
https://www.ebay.com/itm/358186631570
8 cores with the n355. I split up the cores to run multiple VMs and docker containers. I passed through all the network interfaces to the opnsense VM. It also has 2 m.2 slots(pcie 1x) I use for mirroring 2 64GB intel optane ssds in a zpool.
Follow the guides at https://pon.wiki/ for replacing your ISP modem with a sfp module running custom firmware. The sfp module will require some sort of active cooling, I bought a 3D printed bracket and fan from their discord server. You can also get a sfp to Ethernet media converter if your firewall does not have sfp: https://www.amazon.com/gp/aw/d/B0FCFWGWHT
These work great as a firewall: https://www.ebay.com/itm/358186631570 8 cores with the n355. I split up the cores to run multiple VMs and docker containers. I passed through all the network interfaces to the opnsense VM. It also has 2 m.2 slots(pcie 1x) I use for mirroring 2 64GB intel optane ssds in a zpool.