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Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter 34 Configuring Twice NAT (ASA 8.3 and Later)
Configuring Twice NAT
The Add NAT Rule dialog box appears.
Step 2 Set the source and destination interfaces.
By default in routed mode, both interfaces are set to --Any--. In transparent firewall mode, you must set
specific interfaces.
a. From the Match Criteria: Original Packet > Source Interface drop-down list, choose the source
interface.
b. From the Match Criteria: Original Packet > Destination Interface drop-down list, choose the
destination interface.