I was wondering if anyone might be able to help me through my conundrum!
I'm trying to configure a 1801 router to fail-over between a main connection, via the fa 0 port and a backup via the ADSL port. I've been able to achieve this with the attached config, using NAT on the router to translate between the two external ip add ranges.
The NAT on the router is configured as:
10.10.0.1 for the vlan
10.10.0.2 for the pix (this handles the internal nat)
10.10.0.3 for the exchange server.
The PIX then performs it's own NAT to the existing internal network. This all seems to work fine, but the client has a second firewall that is used to create a VPN link to another network. I need to be able to keep my fail-over config but i also need to present the 2nd firewall with a non natted / DMZ IP address from the backup link.
Any thoughts, comments or ideas would be greatly appreciated!