Netgear WNDR4500v3 – N900 WiFi Dual Band Gigabit Router—Premium Edition 사용자 설명서

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Network Settings 
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N900 WiFi Router 
MTU Size (in bytes). The normal MTU (maximum transmit unit) value for most 
Ethernet networks is 1500 bytes, or 1492 bytes for PPPoE connections. Change the 
MTU only if you are sure that it is necessary for your ISP connection. See 
NAT Filtering. Network Address Translation (NAT) determines how the router 
processes inbound traffic. Secured NAT protects computers on the LAN from attacks 
from the Internet but might prevent some Internet games, point-to-point applications, 
or multimedia applications from working. Open NAT provides a much less secured 
firewall but allows almost all Internet applications to work.
5. 
Click the Apply button.
Your changes are saved.
Set 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 Network Address Translation 
(NAT). The router is programmed to recognize some of these applications and to work 
correctly with them, but other applications might not function well. In some cases, one local 
computer can run the application correctly if the IP address for that computer is entered as 
the default DMZ server.
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.
The router usually detects and discards incoming traffic from the Internet that is not a 
response to one of your local computers or a service that you configured in the Port 
Forwarding/Port Triggering screen. Instead of discarding this traffic, you can specify that the 
router forwards the traffic to one computer on your network. This computer is called the 
default DMZ server.
To set up a default DMZ server: 
1. 
Launch a web browser from a computer or wireless device that is connected to the 
network.
2. 
Type http://www.routerlogin.net or http://www.routerlogin.com.
A login screen displays.
3. 
Enter the user name and password.