I have a clinet that is trying to ftp to my ftp server...because he was unable to change his route from the test server to the production server I figured I would nat his source address to the new ftp server (source) 170.146.x.x to my ftp server 206.143.x.x. In his router he has a static route pointing to the other side of my wan router 172.1.x.x. The configuration is below.
!
int e0
ip nat inside
X.X.X.X
!
ip nat inside source static 206.143.96.X 206.143.106.x. I think this should work.......I hope this is enough info.