We help IT Professionals succeed at work.

Setup Lan to Lan VPN Tunnel when client networks / address space overlaps

Last Modified: 2008-03-28

We have the following setup

Core Site:
Cisco 2620 as the LAN default gateway
Cisco VPN Concentrator 3005 for VPN Tunnels to our clients

Remote Client Sites:
Cisco Pix 506e Firewalls

The issue is that we have is that we have our first two clients with overlapping address space and we need to do lan to lan tunnels.

Core Site Address Space is
Client Side Address Space - in this case we have two with

I have hear that is is possible to NAT the traffic on the Cisco Concentrator outbound to the sites so that we could have point to
and point to

Does anyone have configuration examples or information on how/where to do this on a Cisco VPN 3005? I know how to setup the routes on our router and I am fairly well versed on the concentrator.

Watch Question

Systems Architect
Top Expert 2008
Unlock this solution and get a sample of our free trial.
(No credit card required)
Unlock the solution to this question.
Thanks for using Experts Exchange.

Please provide your email to receive a sample view!

*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.