Bridge wlan and SPECIFIC port in a switch on OPENWRT?

Question

Computer networks

Is it possible to connect a WAN port to the bridge and one LAN port on OPENWRT.
There is a grid thrown around the office, a cable comes to the workplace.
You need to connect a wifi access point with nat + wifi network without nat with a bridge in wan (it’s clear how) and connect a workstation through the same cable (here you need to bridge a specific port on the router in the WAN), an additional hub is too lazy, because. to. I'm sure you can do without it.

Answer 1

I think it’s quite feasible with vlans, on the attached screen, the router has wan ports reassigned to lan, 4 and 5 are combined into a switch.