Cisco NAT via a Loopback interface. Policy Based Routing?
Posted on 2009-02-11
Hello All, this might come across as a odd scenario and to save posting miles of text ill just explain the technical difficulty that were experiencing in the hope that someone can offer some help:
We have a Cisco 2811 router with an outside interface address of 192.168.10.1 /24 and an inside interface address of 192.168.20.1 /24. I want the inside range to appear to anything on the outside of the router as 172.16.10.0.
A basic static NAT will not do the trick because it will translate into a 192.168.20.x address. Ive experimented with bouncing the process off a Loopback interface inside the router so the packets pick up a 172.16.10.x translation but that didnt work because i assume the packets exit interface was not the Loopback address.
Could Policy Based Routing be the answer?
Any help is much appreciated.