NETGEAR DG834GUV5 user manual Setting Up a Default DMZ Server

DG834GUv5 Wireless Router with Built-in DSL Modem User Manual

Table 5-1. WAN Setup Settings

Setting	Description
Respond to Ping on Internet	If you want the modem router to respond to a ping from the Internet,
WAN Port	select this check box. This should be used only as a diagnostic tool,
	since it allows your modem router to be discovered. Do not select this
	check box unless you have a specific reason to do so.
MTU Size (in bytes)	The normal MTU (Maximum Transmit 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. This is rarely required,
	and should not be done unless you are sure it is necessary for your ISP
	connection.

Setting Up a 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.

The default DMZ server feature is helpful when you are using some online games and videoconferencing applications that are incompatible with NAT. The modem router is programmed to recognize some of these applications and to work properly with them, but there are other applications that may not function well. In some cases, one local computer can run the application properly if that computer’s IP address is entered as the default DMZ server.

Incoming traffic from the Internet is normally 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 Ports 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.

To assign a computer or server to be a default DMZ server:

1.Go to the WAN Setup screen as described in the previous section.

2.Select the Default DMZ Server check box.

3.Type the IP address for that server.

4.Click Apply to save your changes.

Advanced Configuration 5-3

v1.0, May 2009