I have a scenario as below. I have one cisco 2811 router with two Ethernet ports(one WAN(A) and one LAN(B)) and one ADSL interface(C).
Behind the router there is a cisco ASA 5500 firewall with three VLAN's(Internal (D) , External(E) and DMZ (F)).
I want all incoming traffic on certain ports arriving at the WAN(A) port to be directed to a server inside the DMZ(F) which will server the responds through the WAN port(A) only. Also any request for internet from the internal vlan(D) should be going out through the ADSL line(C).
Is it possible to such a configuration with the 2800 series router and ASA 5500 firewall? Is it possible someone can show me a sample configuration.