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


L2L VPN Problem - ACL over-riding Crypto ACL

ccfcfc asked
Medium Priority
Last Modified: 2012-05-06
I have an L2L tunnel in place between a PIX515E and a 2811 router. I have one subnet on the PIX able to access six on the 2811 end with no problems. However, I have two other subnets on the PIX that can't get to the subnets on the 2811.

I have set logging to debug and when I try access on either of the two subnets that aren't working I can see the traffic being blocked by the ACL applied to the interfaces that those subnets are on. This is despite there being crypto ACLs in place to allow that traffic to get to subnets on the 2811.

Are crypto ACLs evaluated before standard ACLs, which should stop the ACL on the interface from blocking the outgoing traffic destined for the 2811 ?

I also have "sysopt connection permit-ipsec" set on the PIX.
Watch Question

Top Expert 2009
Yes, the interface ACL will be evaluated first so you need to permit the PIX side subnet traffic to the 2811 side subnets in the interface ACL.  The "sysopt connection permit-ipsec" will not help in this case.

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.