I am looking at deploying my new ASA 5510 in the following manner:
ADSL & Cable Connections <---> Cisco 2811 Router in Bridge mode <-->NAT <---> ASA 5510 in Routing mode <----> Core Switch
*(Site2Site VPN will be running on ASA)
My questions are thus:
1) Since I have two public (static) IPs from the DSL & Cable connections, should I have two router interfaces connected to two interfaces on the ASA, or can I just have one interface connecting the router and ASA, binding both public IPs onto one ASA interface?
2) Do you see any pitfalls in doing it this way (router in bridge mode) vs just doing a double NAT (NAT traffic at the router, and then again at the ASA)