Setting Up A Default Dmz Server - NETGEAR RangeMax WPN824v3 User Manual

RangeMax Wireless Router WPN824v3 User Manual
Table 5-1. WAN Setup Screen Settings (continued)
Setting
Respond to Ping on Internet
WAN Port
MTU Size
NAT Filtering

Setting Up a Default DMZ Server

The Default DMZ Server feature is helpful when you are using some online games and
videoconferencing applications that are incompatible with NAT. The wireless 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.
Warning: For security reasons, you should avoid using the Default DMZ Server feature.
When a computer is designated as the default DMZ server, it loses much of
the protection of the firewall, and is exposed to many exploits from the
Internet. If compromised, the computer can be used to attack your network.
Usually the wireless router discards incoming traffic from the Internet unless it is a response to a
local computer or a service that is configured in the Ports screen. Instead of discarding this traffic,
you can forward it to a computer on your network. This computer is the default DMZ server.
To assign a computer or server to be a default DMZ server:
1. Log in to the wireless router (see
2. From the main menu, select WAN Setup under the Advanced heading.
3. Select the Default DMZ Server check box, and type the IP address for that server.
4. Click Apply to save your changes.
5-6
Description
If you want the wireless router to respond to a ping from the Internet, select
this check box. This should be used only as a diagnostic tool, since it allows
your wireless router to be discovered. Do not select this check box unless
you have a specific reason to do so.
The normal MTU (Maximum Transmission Unit) value for most Ethernet
networks is 1500 bytes, or 1492 bytes for PPPoE connections. For some
ISPs you might need to reduce the MTU. But this is rarely required, and
should not be done unless you are sure that it is necessary for your ISP
connection.
The wireless router uses Network Address Translation (NAT), so your
network presents only one IP address to the Internet, and outside users
cannot directly address any of your local computers.
"Logging In to the Wireless Router" on page
v1.0, January 2008
1-2).
Advanced Settings and Features