Cisco ROUTER-SDM-CD User Manual page 592

Network Address Translation Rules
Clone selected entry on Add
What Do You Want to Do?
If you want to:
Designate the inside and outside
interfaces.
You must designate at least one inside
interface and one outside interface in
order for the router to perform NAT.
Add, edit, or delete an address pool.
Dynamic rules can use address pools to
assign addresses to devices as they are
needed.
Set the translation timeout.
Add a NAT rule.
Cisco Router and Security Device Manager 2.5 User's Guide
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Dynamic address translation. There are two methods of dynamic addressing
using NAT. One method maps multiple private addresses to a single public address
and the port numbers of host sessions to determine which host to route returning
traffic to. The second method uses named address pools. These address pools
contain public addresses. When a host with a private address needs to establish
communication outside the LAN, it is given a public address from this pool. When
the host no longer needs it, the address is returned to the pool.
If you want to use an existing rule as the basis for a new rule that you want to
create, choose the rule and check this check box. When you click Add, the
addresses in the rule you chose appear in the Add Address Translation Rule
window. You can edit these addresses to obtain the ones you need for the new rule
instead of entering the entire address into each field.
Do this:
Click Designate NAT interfaces, and designate interfaces as
inside or outside in the NAT Interface Setting window.
Interfaces can also be designated as inside or outside
interfaces in the Interfaces and Connections window.
Click Address Pools, and configure address pool information
in the dialog box.
Click Translation Timeouts, and set the timeout in the
Translation Timeouts window.
Click Add, and create the NAT rule in the Add Address
Translation Rule window.
If you want to use an existing NAT rule as a template for the
new rule, choose the rule, click Clone selected entry on
Add, and then click Add.
Chapter 26 Network Address Translation
OL-4015-12