we have an 1841 router with one HWIC-4ESW card installed in slot 0. The router alongwith two IBM servers is colocated in an IDC.
The FE0/0 port terminates a connection to the public Internet and will be assigned the global IP address given by the ISP.
The FE0/1 port terminates a MPLS connection to our branch office and has a provider assigned private IP address(10.1.9.1.2 255.255.255.252)
The two IBM servers are connected to two ports of the HWIC-4ESW card.
The addressing scheme for the server LAN in IDC is 192.168.2.0.It is planned to assign 192.168.2.2(App server) and 192.168.2.3(Database server) to these servers.
The addressing scheme for the private LAN at the branch is 192.168.1.0.
The application traffic flow is as follows: User requests from the public Internet first come to the App server(192.168.2.2).App server talks to the DB server and then via the MPLS link connects to the server at the branch office and after getting the response from the branch office finally sends back the results to the initiating user on the Internet.
Can you please help us with the configuration(routing & NATting) needed for this setup to work.