3D Connexion 17621 setup guide NAT Mapping

be able to communicate with/configure the NAT Router via the Command Line interface.

Enabled Overall NAT capability in Router

After the InternalRange and ExternalRange, Enabled is probably the most important keyword in this section. It allows the router to perform Network Address Translations between the internal and External Networks. The default value is Off. The router will not "NAT" if Enabled is Off.

[ NAT Mapping ]

The one−to−one translation pairs of the NAT Map Database are entered with the edit config rather than the configure command. These pairs allow the user to provide access from the Internet/External Network to selected parts of the NAT Internal Network, such as a Web server, as was previously shown in the NAT "SHOW" COMMANDS section.

Nat_2220> edit config nat mapping

Enter Password: <Entered password>

Editing "[ NAT Mapping ]"...

1:[ NAT Mapping ]

2:10.5.3.20 −> 198.41.9.194 End of buffer

Edit [ NAT Mapping ]> ? Available Editor Commands:

Append	Append lines into the buffer
Delete	Delete a line from the buffer
Print	Print a range of lines
List	Print a range of lines
	(Non printing characters printed unambiguously)
Help	Print this message
Quit	Leave the editor (ignoring changes)
Exit	Leave the editor (saving changes)
Edit [ NAT Mapping	]> append
Enter lines at the	prompt. To terminate input, enter
a . on a line all by itself.
Append> 10.5.3.11:80 −> 198.41.9.195:80
Append> .
Edit [ NAT Mapping	]> exit
Saving section...
Checking syntax...
Section checked successfully.
*Nat_2220# save
Save configuration	to flash and restart device? y

(Router will restart)

The NAT Map Database one−to−one translation pair is always entered with the internal IP address first, followed by a space, followed by a "−>" (a single equals sign "=" could be used instead), followed by a space, followed by the IP address all external/Internet users will access.

The router will check the syntax of the entered one−to−one pair for correctness. The IP addresses are parsed in the same way as IP addresses are parsed in the add ip route command, described in the ip route (add) section of the Text−Based Configuration and Command Line Reference Guide.

After rebooting, the NAT Map Database would look like...