Netgear Dgnd4000 N750 Wireless Dual Band Gigabit Adsl2 Plus Modem Router User Manual

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51  N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
•NAT Filtering. Network Address Translation (NAT) determines how the wireless 
modem 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...

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The best MTU setting for NETGEAR equipment is often just the default val\
ue, and changing 
the value might fix one problem but cause another. Leave the MTU unchanged unless one of 
these situations occurs:
• Y
ou have problems connecting to your ISP or other Internet service, and t\
he technical 
support of either the ISP or NETGEAR recommends changing the MTU setting\
. These 
web-based applications might require...

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2. 
In the MTU Size field, enter a new size from 64 through 1500.
3.  Click  Apply to save the settings.
LAN Setup
The LAN Setup screen allows configuration of LAN IP services such as Dyn\
amic Host 
Configuration Protocol (DHCP) and Routing Information Protocol (RIP)\
.
The wireless modem router is shipped preconfigured to use private IP add\
resses on the LAN  side and to act as a DHCP server
 . The wireless...

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These settings are described in the following section, LAN Setup Screen Settings.
3. Click Apply to save your changes.
LAN Setup Screen Settings
LAN TCP/IP Setup
•IP Address. The LAN IP address of the wireless modem router.
•IP Subnet Mask. The LAN subnet mask of the wireless modem router. Combined with 
the IP address, the IP subnet mask allows a device to know which other addresses are 
local to it, and which...

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computers from a pool of addresses specified in this screen. Each pool a\
ddress is tested 
before it is assigned to avoid duplicate addresses on the LAN. For most \
applications, the 
default DHCP and TCP/IP settings of the wireless modem router are satisfactory. 
You can specify the pool of IP addresses to be assigned by setting the st\
arting IP address  and ending IP address. 
 These addresses should be part of...

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Tip:
If the computer is already on your network, you can copy its MAC 
address from the Attached Devices screen and paste it here.
4.  Click  Apply  to enter the reserved address into the table. 
The reserved address is not assigned until the next time the computer co\
ntacts the  wireless modem router’
 s DHCP server. Reboot the computer or access its IP 
configuration and force a DHCP release and renew.
To edit...

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WMM QoS is enabled by default. You can disable it in the QoS Setup screen by clearing the 
Enable WMM check box and clicking 
Apply.
Set Up QoS for Internet Access
You can give prioritized Internet access to the following types of traffic:
• Specific applications
• Specific online games
• Individual Ethernet LAN ports of the wireless modem router
• A specific device by MAC address
To specify prioritization of...

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4. 
In the QoS Policy for field, type the name of the application or game.
5.  In the Priority Category list, select either  Applications or Online Gaming. 
In either case, a list of applications or games displays in the Applications list.
6.  In the 
Applications list, you can select an existing item, or you can scroll an\
d select  Add a 
New Application or  Add a New Game, as applicable. 
a. When you add a new...

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QoS for a Wireless Modem Router LAN Port
To create a QoS policy for a device connected to one of the wireless mode\
m router’s 
LAN ports:
1. 
Select  ADV
 ANCED > Setup > QoS Setup to display the QoS Setup screen. Select the 
Turn Internet Access QoS On  check box.
2.  Click the  Setup QoS Rule button.
3.  Click the  Add Priority Rule button.
4.  From the Priority Category list, select  Ethernet LAN Port. 
5....

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Edit or Delete an Existing QoS Policy
To edit or delete a QoS policy:
1. Select ADVANCED > QoS Setup to display the QoS Setup screen.
2. Select the radio button next to the QoS policy to be edited or deleted, and do one of the 
following:
•Click Delete to remove the QoS policy.
•Click Edit to edit the QoS policy. Follow the instructions in the preceding sections to 
change the policy settings.
3. Click Apply in...