I am new to Firewalling and I have a project that I need to implement at a customer's site. Here is the current network design:
ASA 5505 connected through customer's router
Outsite Interface: IP 126.x.y.z
Site-To-Stie IPSec VPN to ISR (Headquarter)
Site-To-Site IPSec VPN to ASA5505
The customer will be replacing his data service provider and thus his router and that would cause us to lose the public IP 126.x.y.z; therefore, VPN tunnel to ISR. The customer mentioned that he would proivde us with a private IP address only. So, my question is; since the outside interface currently having a publich IP address of the ASA5505 will be gone, how should I configure the ASA5505 to re-establish the tunnel knowing that the ASA will be on the customer's switch and the outside interface will now have to be configured with a private IP address instead of ?
Thanks much for your help.