Netgear WNDR3800 사용자 설명서

WAN Setup

The WAN Setup screen lets you configure a DMZ (demilitarized zone) server, change the 
Maximum Transmit Unit (MTU) size, and enable the router to respond to a ping on the WAN 
(Internet) port. Select Advanced > Setup > WAN Setup to view the following screen:

. DoS protection protects your LAN against 

Denial of Service attacks such as Syn flood, Smurf Attack, Ping of Death, Teardrop 
Attack, UDP Flood, ARP Attack, Spoofing ICMP, Null Scan, and many others. This should 
be disabled only in special circumstances. 

. This feature is sometimes helpful when you are playing online 

games and/or videoconferencing. Be careful when using this feature because it makes 
the firewall security less effective. See the following section, 

more details.

. If you want the router to respond to a ping from the 

Internet, select this check box. Use this only as a diagnostic tool because it allows your 
router to be discovered. Do not select this check box unless you have a specific reason.

. IGMP proxying allows a computer on the local area network 

(LAN) to receive the multicast traffic it is interested in from the Internet. You can select 
this check box to disable the feature if you do not need it.

. 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 

. Network Address Translation (NAT) determines how the router processes 

inbound traffic. Secured NAT provides a secured firewall to protect the computers on the 
LAN from attacks from the Internet, but might prevent some Internet games, point-to-point 
applications, or multimedia applications from functioning. Open NAT provides a much 
less secured firewall, but allows almost all Internet applications to function.