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ASA as gateway for a 2811 router that will be site site VPN

Posted on 2012-03-28
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Last Modified: 2012-04-05
Dear Experts,
I am in need to establish a site to site VPN between 2 cisco routers. One router does not have internet access. I need to make our ASA 5505 its gateway to the internet. I need to make the 2811 router visible in the internet. I have an external IP address I can give it in one of the interfaces (fa 0/0).

I am thinking of using one of the interfaces of the ASA5505 as a DMZ for the Cisco 2811. My questions are for the necessary commands to make this happen in both devices. Is this possible?
Here is an illustration attempted of what the idea looks like.

---voice and data --SA-router 2811¿----¿ ASA5505     VPN   internet  VPN    ASA5510 ¿--¿                                            
                                                                         HOU-router---voice and data traffic            

I only need this for one router by the way. I am more challenge in the asa5505 part.

We tried the site to site VPN between the firewalls but it didn’t work.

Regards, M
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Question by:marceloNYC
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gbblaster earned 500 total points
ID: 37783080
There is no reason why a VPN between the firewalls wouldn´t work. Can you post the crypto map and isakmp settings along with the ACL that you associated with the tunnel?

If you gave up on the ASA---ASA VPN, then all you´d need to do on the ASA to assign a public IP address to the router  is a static translation on the ASA

static (DMZ,Outside) {public address} {internal router address}

then open inbound permits on the ASAs outside ACLs for vpn traffic wich include:

Protocol ESP
UDP 500
UDP 4500
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Author Comment

by:marceloNYC
ID: 37806078
today what we are going to do is place a switch between the ISP and the firewall to split the internet access. That is how we are going to make the Router visible to the internet. Once is working will let you know.
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