How Nat my internal hosts for Lan to Lan VPN

Hi all, I have to connect a L2L to another company, however, they want we host NAT internal to a different subnet. There may be side address conflicts there. They want us to the Nat my 192.168.200.0 to 10.10.12.0 subnet subnet. All class C to the L2L.

192.168.200.0 ASA1 <---> <-- internet="" --="">ASA2<-->

(10.10.12.0)

Any suggestions on how I can get this working? I know that it will take just not a 100% on access lists lists some access and I'm trying to keep to a minimum and the time, right now we are just the standard nating for guests a couple of a global IP address for internal Internet traffic.

Thank you...

Daniel

Here's what can be configured:

access list static L2L permit ip 192.168.200.0 255.255.255.0 192.168.10.0 255.255.255.0

public static 10.10.12.0 (inside, outside) access list static L2L

If you have already configured from 192.168.200.0/24 192.168.10.0/24 NAT exemption, you need to remove it because the NAT exemption has priority over static translation.

As a result, you must also change your ACL crypto to come from 10.10.12.0/24 instead of 192.168.200.0/24 and counterpart what ASA also has to change the ACL crypto to source of 192.168.10.0/24 to 10.10.12.0/24 as follows:

Your ACL crypto: cryptoACL ip 10.10.12.0 access list allow 255.255.255.0 192.168.10.0 255.255.255.0

Peer crypto ACLs: permit ip 192.168.10.0 access list cryptoACL 255.255.255.0 10.10.12.0 255.255.255.0

Hope that helps.

Tags: Cisco Security

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