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Lan to Lan tunnel with similar internal network addresses on both ends

I need to connect my network to another businesses network via a Lan to Lan tunnel using a VPN Concentrator to PIX mainly for FTP purposes. Well, theres no problem connecting the tunnel, but the problem is that the network I am connecting to has the same internal (Private) addresses as I do - 10.1.1.0. Im under the impression that this wont work due to routing issues, and even if it did, severe ugliness will occur on both ends if I try to do this. What are my options other than one of us changing our address scheme, which of course neither of us really wants to do. Thanks in advance for any replies.

3 REPLIES
Bronze

Re: Lan to Lan tunnel with similar internal network addresses on

Hi, see if this document can help you out....

http://www.cisco.com/warp/public/707/vpn_pix_private.html

Hope that helps

New Member

Re: Lan to Lan tunnel with similar internal network addresses on

Thanks Mike, I think thats just what I needed. I appreciate your quick response.

Cisco Employee

Re: Lan to Lan tunnel with similar internal network addresses on

FYI.

The VPN 3000 in Release 3.6 supports NAT over LAN-to-LAN for Overlapping networks.

Nelson

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