Cisco 3640 Router running NAT: How can i forward an IP

[husmith]

How can i forward one ip 155.55.134.25 to an internal ip 192.168.150.251. The router is running nat and i have created the ip nat source static OUT_IP IN_IP command, but when attempting to ping the IP from outside the device i can not get any acknoldgement same with TCP/UDP.

What am i missing

Thank you

[gfullage]

You should have at least the following:

> interface Serial 0

> description Outside interface

> ip address x.x.x.x y.y.y.y

> ip nat outside

> interface Ethernet0

> description Inside interface

> ip address 192.168.150.x y.y.y.y

> ip nat inside

> ip nat inside source static 192.168.150.251 155.55.134.25

Looks like you might have gotten the IP addresses around the wrong way going by your description.