Setting up a Stratix 5700 switch

[nightline]

Gents,

I've an Allen Bradley Stratix 5700 full firmware managed switch and need configure some kind of NAT but don't know how to fix this.
This is what is needed:
The CPU is connected to port 18 and has 192.168.1.9
The Switch has address 192.168.1.80
Port 1 is connected to the public plant network in the range 10.168.160.XXX

I want the public network to connect only to the CPU.

How can I do this?

Thanks in advance!