Can't figure out how to access server on a separate subnet

I originally posted this over at r/homelab and have been unsuccessful.

Here is my original post:

"I finally received my Dell PowerEdge R420 and I want to know what's the best way to approach this situation I'm currently trying to resolve.

I am connecting to the server through iDRAC and playing around with it through my second monitor.

I want to keep my "Main Computer" on the 192.168.0.1 network but would like to access the server through iDRAC on my second screen so I can experiment with the server without affecting my "Main Computer" connection."

Current status:

I believe I am doing something wrong with the port-forwarding and can't seem to figure it out.

Can someone help me understand what I'm doing incorrectly?

DIAGRAM: https://imgur.com/PkB1xgG