Pfsense Routing

Hello, I have this kind of Set up , i want to able to access the resources of Server from PC, I dont know how to do it on pfsense and where i will put the cable on the cisco 4321 or LAN SWITCH. firewall rules or routing, please help thanks all suggestion are appreciated.

Ok this is just theoretical …

I would think you need to have a spare port on your pfSense, create a new interface using that port using 192.168.x.x. Then plug your switch into that port.

If you don’t have a spare port not sure how you can create another interface on a different address range.