We are having a little odd requirement in ASA configuration. We are implementing microsoft office communicator over internet. The server need to have two ethernet cards one with publically routeable IP address ( Public static IP address ) and one a private IP address. We have placed the server in the DMZ region of ASA. Which has a security level as 50 and ip address as 10.200.0.1 /24. Now the second ethernet card of server needs to be given a static IP which obviously matches to our outside interface IP address subnet. ( ourside ip address : a.b.c.d1 /24 ) and server card is also given a IP the same range a.b.c.d2 /24. We need to forward the packet received on outside i/f with destination IP as a.b.c.d2 without changeing the destination IP address to server. This can be done by satatic(dmz,outside) a.b.c.d2 a.b.c.d2 command.
But our problem is how will the server return this packet as we are not able to give the default gateway to this card and also not able to connet. How can ASA be configured so that packets can be forwarded from outside to DMZ and also from DMZ to outsie. ( server card IP address matches with outside i/f subnet).
Appreciate example on cisco.com.
Thanks in advance.