Bridge Two Networks on One ISP Router/Modem


New Member
Jun 3, 2021
Hi all,

Does anyone know if it is possible to bridge two networks on one ISP router/modem? I have an established network using ASUS router ( on an ISP modem (192.168.1.x). On the 40 network, I have a HP server with proxmox and pfSense VM installed. I would like to slowly transfer devices from existing network to the pfSense network rather than completely shutting down the existing network. I am unable to access the pfSense IP with this setup after trying multiple attempts to bridge via Proxmox interface. I can plug in a laptop to the pfSense NIC card (ensf02) and access internet and the webpage GUI on the pfSense network. Is there not a way to link the pfSense network and the existing router network with them both attached to the same ISP router so I can access any/all devices???

I have a WAN address for each router (existing and pfSense from the hosting ISP router. I've established LAN DHCP for each of these routers using different subnets (i.e 192.168.40.x and 192.168.20.x). I can not access the pfSense webpage with device on the 192.168.40.x network or vice versa. See attached diagram to network topology.

In summary, I would like to access the unique pfSense network webpage and devices when on the home router network. Is there a bridge setting function required in pfSense console/webpage, the existing home router, or the ISP router? Any instruction would be much appreciate. Thank you all.


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