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Cisco Router and Security Device Manager 2.5 User’s Guide
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Chapter26 Network Addres s Translation
Network Address Translation Wizards
•Comments entered about the network
To remove a network from the NAT configuration, uncheck its check box.
To add a network not directly connected to your router to the list, click Add
Networks.
Note If Cisco SDM does not allow you to place a check mark next to a net work for
which you want to configure a NAT rule, the interface associated with the network
has already been designated as a NAT interface. This status will be indicated by
the word Designated in the Comments column. If you want to configure a NAT
rule for that interface, exit the wizard, click the Edit NAT tab, click Designate
NAT Interfaces, and uncheck the interface. Then return to the wizard and
configure the NAT rule.

Add Network

You can add a network to the list of networks made available in the Advanced
NAT wizard. You must have the network IP address and network mask. For more
information, see IP Addresses and Subnet Masks.
IP Address
Enter the network IP address.
Subnet Mask
Enter the network subnet mask in this field, or choose the numb er of subnet bits
from the scrolling field on the right. The subnet mask tells the router which bits
of the IP address designate the network address and which bits designate the host
address.
Advanced NAT Wizard: Server Public IP Addresses
This window allows you to translate public IP addresses to the private IP
addresses of internal servers that you want to make accessible from the Internet.
The list shows the private IP addresses and ports (if used) and the public IP
addresses and ports (if used) to which they are translated.