Chapter18 Network Address Translation
Network Address Translation Rules
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Cisco Router and Security Device Manager Version 2.2 User’s Guide
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Advanced NAT Wizard: VPN Conflict

If this Advanced NAT wizard window appears, SDM has detected a conflict
between the NAT configuration and an existing VPN configuration for the WAN
interface.
Choose to modify the NAT configuration to remove the conflict, or choose to not
modify the NAT configuration. If you choose to not modify the NAT
configuration, the conflict may cause your VPN connection to stop working.
View Details
Click the View Details button to see the proposed modifications to the NAT
configuration to resolve the conflict.

Details

This window lists the changes SDM will make to the NAT configuration to resolve
conflicts between NAT and VPN configured on the same interface.
Network Address Translation Rules
The Network Address Translation Rules window lets you view NAT rules, view
address pools, and set translation timeouts. From this window you ca n also
designate interfaces as inside or outside interfaces.
For more information on NAT, follow the link More About NAT.
Designate NAT Interfaces
Click to designate interfaces as inside or outside. NAT uses the Inside/Outside
designations as reference points when interpreting translation rules. Inside
interfaces are those interfaces connected to the private networks that the router is
connected to. Outside interfaces connect to the WAN or to the Internet. Th e
designated Inside and Outside interfaces are listed above the NAT rule list.