I have a Cisco ISR with three fast ethernet connections - 1 is local lan, 1 is ISP A and 2 is ISP B.
Say the local LAN is private IP subnet 192.168.100.0/24. The interface to ISP A is 192.168.66.10 and the route to the Internet via ISP A is 192.168.66.1. The interface to ISP B is 192.168.77.10 and the route to the Internet via ISP B is 192.168.77.1. I would like all traffic destined for 184.108.40.206/8 to NAT to ISP A interface IP 192.168.66.10 and route out same. I would like all other internet traffic the default 0.0.0.0 route to NAT to the ISP B interface IP 192.168.77.10 and route out that interface. How would I accomplish this?