We have a 5510 with a public IP address A and a private IP range behind if of Z.Y.Y.0/24, it also has a default route out to 188.8.131.52
We also have a 1841 with a public IP address of B and a private ip range behind it of Z.0.0.0/8, it's default route is 184.108.40.206
We tried to move the public IP of the 1841 on to the ASA 5510 and do Dynamic NAT (which I believe is the equivalent of NAT overload?) and it didn't work.
Of course we couldn't add a new default route on the 5510 but that shouldn't matter as both ranges are served from our ISP via the same VLAN.
In the logs we kept getting 'portmap translation failed for'.. error messages.
When doing the Packet Tracer Wizard from the ASDM it kept failing on the 'dynamic translation to pool 5 (No matching global)'
However when looking in a 'sh nat' we did see a global but it was below the 'dynamic translation to pool 5 (No matching global)' line in the sh nat, so I'm guessing it was hitting that line before hitting the correct dynamic translation line.
Here is the snippet from our configuration: -
global (outside) 10 interface
global (office_outside) 5 interface
nat (inside-eth1) 0 access-list inside-eth1_nat0_outbound
nat (inside-eth1) 5 officeHQ 255.255.0.0
nat (inside-eth1) 10 dc 255.255.0.0
An example of the error we were receiving is as follows: -
Nov 3 22:02:03 <hostname> %ASA-3-305006: portmap translation creation failed for udp src inside-eth1:<server>/56554 dst outside:220.127.116.11/53
Can anyone shed any light on why this didn't work - or if it is even possible?
We are running ASA version 8.2(1) and ASDM version 6.2(1).