NETGEAR WNDR3400 Configuring the WAN Setup Options, WAN Setup Settings, Setting Description

N600 Wireless Dual Band Router WNDR3400 User Manual

Configuring the WAN Setup Options

The WAN Setup screen lets you configure a DMZ (demilitarized zone) server, change the Maximum Transmit Unit (MTU) size, and enable the wireless router to respond to a ping on the WAN (Internet) port. From the main menu, under Advanced, click WAN Setup to view the WAN Setup screen.

Figure 5-3

The WAN Setup fields are described in the following table:

Table 5-2. WAN Setup Settings

Setting	Description
Disable SPI Firewall	The Stateful Packet Inspection (SPI) firewall protects your network and
	computers against attacks and intrusions. A stateful packet firewall carefully
	inspects incoming traffic packets, looking for known exploits such as
	malformed, oversized, or out-of-sequence packets. The firewall should be
	disabled only in special circumstances, such as when you are troubleshooting
	application issues.
Default DMZ Server	This feature is sometimes helpful when you are using some online games and
	videoconferencing. Be careful when using this feature because it makes the
	firewall security less effective. See the following section, Configuring Static
	Routes.
Respond to Ping on Internet	If you want the wireless router to respond to a ping from the Internet, select
Port	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.
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. See “Changing
	the MTU Size” on page 6-6.
Customizing Your Network Settings		5-7

v1.0, August 2010