ADTRAN 616, 612, 606, 624, 604 system manual Appendix C. RFC1483 Quick Start IP Routing with NAT

Total Access 600 Series System Manual Section 4 User Interface Guide

Appendix C. RFC1483 Quick Start (IP Routing with NAT)

To illustrate the use of NAT, consider the example from Appendix B. RFC1483 Quick Start (IP Routing) on page 174. To add NAT to the IP routing example, use the NAT menus.

For more details on the configuration parameters discussed in this section, refer to the following pages: Router Network Interface Configuration menus beginning on page 122

	IP Routing with NAT
Step	Action

The NAT menu is found under ROUTER >CONFIGURATION > INTERFACES >

1SETUP > NAT. The NAT menu can easily be accessed by pressing <CTRL+N>.

The network interface will not appear if a virtual circuit is not defined using the L2 PROTOCOL menus.

2From the NAT menu, set PORT TRANSLATION to ENABLED. (This will enable translation and populate the corresponding NAT menu options.)

Set PUBLIC IP ADDRESS MODE to either INTERFACE or SPECIFIED.

•INTERFACE (default) configures NAT to use the IP address already assigned to the interface. (In other words, the interface address and the NAPT address are the same.)

3

•SPECIFIED allows you to define a different IP address for the NAPT address (public address for private addresses to be translated into).

For basic NAT, this is all of the configuration that needs to be done. For specific port translations or 1:1 mapping, you can enter TRANSLATION TABLE.

From the TRANSLATION TABLE menu, create a new entry by using the right

4arrow to enter the table. Additional entries can be created by highlighting the first entry index number and pressing the <I> key. Entries can be deleted by highlighting the selected entry index number and pressing the <D> key.

Create specific NAT translations based on your application.

PUBLIC IP ADDRESS MODE Use the configured interface IP address as the NAPT
	address or use SPECIFIED to set a different public
	address to be used for the translation.
PROTOCOL MODE	Protocol for this translation. (TCP, UCP, ICMP, TCP or
5	UDP, TCP UDP or ICMP, All, Specified, and NONE.)
PRIVATE ADDRESS MODE SPECIFIED or ANY INTERNAL. Choosing SPECIFIED
	brings up the PRIVATE ADDRESS option.
TRANSLATE BODY	YES or NO. If set to YES, this will translate the body of
	the data packet and replace the private address with
	the NAPT address. Default is NO, which is used for
	most applications.

61200624L1-1B © 2004 ADTRAN, Inc. 179