I have a question about NAT on a cisco router. I have attached a simple network topology, a router with two ISP connection. I would appreciate if somebody could help me, or give me a sample configuration making the incoming connections fail over to the secondary ISP2 when ISP1 fails. Inbound connections to web/smtp servers, making these services available through ISP2 when ISP1 fails.
The fail over outbound connection works with IP SLA, ISP1 being the primary connection, but I have problem with the port forwarding configuration to make the services available.