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Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
Chapter 28 Configuring Twice NAT
Configuring Twice NAT
Figure 28-17 Add NAT Rule Dialog Box
Step 2
Set the source and destination interfaces.
By default, both interfaces are set to Any.
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.
Figure 28-18 Setting the Interfaces
Step 3
Identify the original packet addresses (the real source address and the mapped destination address).
a. For the Match Criteria: Original Packet > Source Address, click the browse button and choose an
existing network object or group from the Browse Original Source Address dialog box. The default
is any, but you typically only use this option when also setting the mapped address to any for
identity NAT. See the “Configuring Identity NAT” section on page 28-15 for more information.
Figure 28-19 Browse Dialog Box
You can also create a new named object or group from the Browse Original Source Address dialog
box and use this object or group as the real source address.
b. (Optional) For the Match Criteria: Original Packet > Destination Address, click the browse button
and choose an existing network object or group from the Browse Original Destination Address
dialog box.
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