I have a Cisco 891w currently connected to the internet with no problems. I have it handing out IP addresses on 192.168.13.0. My issue here is I am now connecting this network physically to another network in the same building that is using a public IP space. Computers are given a 159.x.x.x scope. I want to NAT that 159.x.x.x network and put those devices on the 192.168.13.0 network since I do not have access to that router which controls that subnet and the access behind it. These computers will still need to access devices that are on the 159.x.x.x router. What is the proper way to NAT this scenario? I would assume I would create either a vlan or setup a switchport on Router B as 159.x.x.2 and do an ip nat inside/outside??
NOTE: I do NOT have access to Router A.
Server 1 <------> Router A <---------------------> Router B
|___156.x.x.1 |___159.x.x.1 |____192.168.13.1