The situation is I have one VPN concentrator (ASA5505) which is connected through to a 2811, this in turn has 4 ADSL links, there are four sites which connect in to a specific ADSL line on the 2811. I have been able to successfully configure NAT for out bound connections so that connections from the ASA going to site 1 will go out via ADSL link 1 and connections from the ASA goign to site 2 will go out via ADSL link 2. However I have been having difficulties with either site1 or site2 being able to connect back to the ASA, the 2811 is not doing the reverse translation.
We know that the configuration of the ASA's at each end are correct as previously we had a 877 for each ADSL at the main site. But since terminating each ADSL link onto a single 2811 this is where the problems have started.
I have attached the relevant configuration for the router.
Any help would be appreciated.