We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you two Citrix podcasts. Learn about 2020 trends and get answers to your biggest Citrix questions!Listen Now


No Nat Control

jiggin23 asked
Medium Priority
Last Modified: 2012-08-14
We have an ASA 5540.  I issued the command "sh run nat-c" and it comes back "no nat control'.  From my understanding this means that traffic should pass through the firewal w/o nat transaltion.  The problem is that I couldn't ping from one subnet to antoher, and the subnets are out different interfaces on the ASA.  As soon as I put in a nat exempt statement in the ASA on the source interface it worked fine.  Why would this be if the "no nat control" command is issued??  Thanks for your help.
Watch Question

It probably meant that you don't have either nat command or nat exclusion. One thing to remember is that even if you want to have 'non-natted' services, you need to nat it. What it means is, nat it to the same ip.

2 ways of getting around it. Say you have an ip which you don't want to nat, then you still nat it, but you nat it to itself, or include a nat exclusion command. Both works the same way.

First -> static (inside, outside) netmask

Second -> nat exclusion which you obviously know.


Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*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.