So I bought a fanless firewall appliance with 4x2.5Gbps ports and I would like to setup Proxmox on two identical SSD drives. I also want to configure a bridge on my ISP router and then configure the router as a firewall on top of Proxmox. My plan is to install HA on top of Proxmox too.

My goal is to separate both my normal WiFi connection into two or even 3 VLANs, one for normal devices, one for IoT and a third for Guest VLAN. And I would like the Home Assistant to have access to both my normal SSID and IoT VLANs.

For the Access point I have a mesh router that doesn't support VLANs and I was thinking temporary to repurpose an old Netgear R7800 and here I don't know whether I should simply configure the Guest SSID to be for the IoT or repurpose the 2.4GHz network and leave the 5Ghz for normal devices. Currently on the WiFi router I have OpenWRT but I am also considering switching to Voxel?

Can you maybe recommend some tutorials with what settings and setup to use and if you had similar network setup to give me some hints on what to