User's Manual Part 2

Section 3 – Configuration
D-Link DSL-2640R User Manual 33
Note that if the NAT Status in the window above
indicates “Deactivated,” the user must first activate
NAT on the Internet menu. Click SAVE and the
window above will appear. The IP Address Mapping
(for Multiple IP Service) link only appears when the
Multiple option is selected under Number of IPs.
DMZ
Since some applications are not compatible with NAT,
the Router supports use of a DMZ IP address for a
single host on the LAN. This IP address is not
protected by NAT and will therefore be visible to
agents on the Internet with the right type of software.
Keep in mind that any client PC in the DMZ will be
exposed to various types of security risks. If you use
the DMZ, take measures (such as client-based virus
protection) to protect the remaining client PCs on your
LAN from possible contamination through the DMZ.
To designate a DMZ IP address, select the Enabled
radio button, type in the DMZ Host P Address of the
server or device on your LAN, and click the SAVE
button. To remove DMZ status from the designated IP
address, select the Disabled radio button and click
SAVE. It will be necessary to save the settings and
reboot the Router before the DMZ is activated.