Netgear DGND3300 Manual Do Utilizador

1-8

Configuring Your Internet Connection

NAT (Net Address Translation)

NAT automatically assigns private IP addresses (10.1.1.x) to 
LAN-connected devices.
• Enable. Usually NAT is enabled.
• Disable. This disables NAT, but leaves the firewall active. 

Disable NAT only if you are sure that you do not require it. 
When NAT is disabled, only standard routing is performed 
by this router. Classical routing lets you directly manage the 
IP addresses that the modem router uses. Classical routing 
should be selected only by experienced users

a

• Disable firewall. This disables the firewall in addition to 

disabling NAT. With the firewall disabled, the protections 
usually provided to your network are disabled.

This field 
appears only if 
your ISP does 
not require a 
login.

Router MAC Address

Your computer’s local address is its unique address on your 
network. This is also referred to as the computer’s MAC 
(Media Access Control) address. 
• Use Default MAC Address. This is the usual setting.
• Use Computer MAC address. If your ISP requires MAC 

authentication, you can use this setting to disguise the 
modem router’s MAC address with the computer’s own MAC 
address. 

• Use This MAC Address. If your ISP requires MAC 

authentication, you can manually type the MAC address for 
a different computer. The format for the MAC address is 
XX:XX:XX:XX:XX:XX. 

a. Disabling NAT reboots the modem router and resets its configuration settings to the factory defaults. Disable NAT only if you 

plan to install the modem router in a setting where you will be manually administering the IP address space on the LAN side 
of the router.

Note: For information about how to install ADSL filters, see the Setup Manual.