Hi I'm a beginner to this so I would very much like a second opinion on this configuration. This is what I intend. Port 1. WAN port connected to ISP. VLAN 10 Port 3. Firewall, with one ethernet only.

I have a new site I'm setting up with an ISP supplied router. The site is on our private WAN and 10.10.40.0/21 is being routed to this site. VLAN1 10.10.40.0/24 gateway 10.10.40.2 (the isp router is 1