Hello all, I have a client who has a business DSL connection and has purchased a Cisco 837 and Pix 506e firewall. Currently I'm planning to setup the firewall to use PPPoE via the bridged 837 router. So network looks like this :-
LAN PIX ADSL 837 ISP
The reason why I'm using bridge mode is to allow VPN to terminate on the Cisco PIX which requires a public IP. The client has only been assigned 1 IP address for the ADSL connection. I understand that in order to manage the 837 in bridged mode I need to assign an IP address on the BVI interface on the 837. I would assume that this IP address needs to be on the same subnet as the external interface of the PIX firewall. If that is the case then obviously I would need to have another public IP address in the subnet as the one already given to my IP - is this correct? Could I not use a private IP address and assign one to the PIX as well - not sure if that's possible. Has anyone been involved in this type of setup? Please advise, thanks.
Regards, Hugoti