I went through the tutorial for configuring OPNsense as a transparent filtering bridge.
Once I had it configured I connected it between my modem and router.
I did configure the 3rd port as management and assigned a static IP to it.
I cannot ping or access the management page using that IP address nor can I access it using the static IP address I was using before I moved it ahead of the router.
I'm sure I've probably missed something somewhere but I could use some guidance.
The filtering bridge is "working" because during the initial configuration it was configured to pass everything.
Thanks in advance.