We help IT Professionals succeed at work.

NAT Loopback on Cisco Router?

sphbecker asked
Last Modified: 2010-11-05
I have a Cisco 877 router at my house and have a static NAT statement to allow a service out of the public interface.  That part works, my problem is that computers on the privet side cannot access the service using the public IP address.  I have a Linksys router before and it had a "loopback" option which allowed this to happen, is there a way to configure the Cisco router to do the same thing?

I know a common work-around is to have a local DNS Server directing clients to the internal address, but I don't have a local DNS server and don't want to install one.
Watch Question

Top Expert 2009

Unless things have changed, you can not do this with a Cisco router.  How about putting an entry in the hosts file on the PC's if you don't want to use a DNS server?
Les MooreSystems Architect
Top Expert 2008

Agree with JFrederick29. You simply can't do it with Cisco.
You can only access the service using the private IP address.


Oh that really stinks.  No a hosts file will not work because I wanted my laptop to work seemlessly inside or outside of the network.  Thanks for the info.
This one is on us!
(Get your first solution completely free - no credit card required)
Unlock the solution to this question.
Join our community and discover your potential

Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.