Wan pass through

[Botanist]

Hi there!

I wondering if it's possible to have statically assigned wan on one nic (as usual) (This would hypothetically be my second wan) But to not complicate stuff. One wan in and the second nic would simply pass that wan over. The second nic would be connected to a router that has that static ip set already. It is a fairly big network but old and we don't want to touch it for now.

Basically opnsense would become a firewall for another router.

Any other suggestions would be helpful too 🙌🏼

[Patrick M. Hausen]

You probably want a transparent filtering bridge:

https://docs.opnsense.org/manual/how-tos/transparent_bridge.html

[Botanist]

You probably want a transparent filtering bridge:

https://docs.opnsense.org/manual/how-tos/transparent_bridge.html

Would that still allow me to have an Lan1, Lan2 and wan with failover to that wan that is bridge?

[viragomann]

Would that still allow me to have an Lan1, Lan2 and wan with failover to that wan that is bridge?

Basically the bridge has no impact on non-member interfaces.
But your setup is not clear to me at all. Maybe you can provide a network map and show, what you intend to achieve.