User Guide

Advanced Features Page 103
Delete a DMZ Address Range
To delete an address or range, select it in the Address Range list and click Delete. Once
the SonicWALL has been updated, a message confirming the update is displayed at the
bottom of the browser window.
Note: Network Address Translation (NAT) does not apply to servers on the DMZ.
One-to-One NAT
One-to-One NAT maps valid, external addresses to private addresses hidden by NAT.
Computers on your private LAN are accessed on the Internet at the corresponding public IP
addresses.
You can create a relationship between internal and external addresses by defining internal
and external address ranges of equal length. Once the relationship is defined, the computer
with the first IP address of the private address range is accessible at the first IP address of
the external address range, the second computer at the second external IP address, etc.
In the following example, a business has been assigned valid IP addresses ranging from
209.19.28.16 to 209.19.28.31, with 209.19.28.16 assigned as the NAT Public Address.
The address range of 192.168.168.2 to 192.168.168.255 is used by computers on the LAN.
Typically, only computers that have been designated as Public LAN Servers are accessible
from the Internet. However, with One-to-One NAT, computers with private IP addresses
of 192.168.168.2 to 192.168.168.16 can be accessed at the corresponding external IP
address, as shown in the diagram below.
integrated_manual.book Page 103 Friday, October 12, 2001 2:56 PM