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RangeMax Dual Band Wireless-N Modem Router DGND3300 User Manual
6-11 Customizing Your Network Settings
v1.0, January 2010
Setting Up a Default DMZ Server
The default DMZ server feature is helpful when using some online games and videoconferencing
applications that are incompatible with Network Address Translation (NAT). The modem router is
programmed to recognize some of these applications and to work correctly with them, but there
are other applications that might not function well. In some cases, one local computer can run the
application correctly if that computer’s IP address is entered as the default DMZ server.
Incoming traffic from the Internet is usually discarded by the modem router unless the traffic is a
response to one of your local computers or a service that you have configured in the Port
Forwarding screen. Instead of discarding this traffic, you can have it forwarded to one computer on
your network. This computer is called the default DMZ server.
The WAN Setup screen lets you configure a default DMZ server.
To assign a computer or server to be a default DMZ server:
1. In the last Default DMZ Server field, type the last digit of the IP address for that computer.
To remove the default DMZ server, enter 0 (zero).
2. Select the Default DMZ Server check box, and click Apply.
Warning: DMZ servers pose a security risk. A computer designated as the default DMZ
server loses much of the protection of the firewall and is exposed to exploits
from the Internet. If compromised, the DMZ server computer can be used to
attack other computers on your network.