TP-Link TD-W8900GB - Manual (Page 32)

TD-W8900GB 54M Wireless ADSL2+ Router User Guide
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the following IP Address, and then enter the WAN IP Address and WAN Subnet
Mask.
2) Configure the default gateway. If you are provided a dynamic gateway address, please
select obtain default gateway automatically, and then the Router will automatically get
gateway parameters from your ISP. If you are provided with a static gateway, please
select Use the following default gateway, and then enter the gateway address.
3) Configure the DNS. If you are provided dynamic DNS server addresses, please select
obtain DNS server addresses automatically, then the Router will automatically get
DNS server addresses from your ISP. If you are provided static DNS server addresses,
please select Use the following DNS server addresses, then enter the DNS Server
addresses. In this case, you will be provided at least one DNS server address.
4) Click the Next button, and you will see the screen (shown in Figure 5-10). You can also
click the Back button to return to the previous screen to make modifications. On the
screen below, you can Enable the NAT, Firewall, IGMP Multicast and WAN Service, if
you are not sure about the settings, just leave the default settings.
Figure 5-10
¾ Enable NAT: This technology translates the IP addresses of a local area network to a
different IP address for the Internet. If this Router is hosting your network’s connection to the
Internet, please select the check box. If another Router exists in your network, you don’t need
to select the option.
¾ Enable Firewall: A firewall enhances network’s security. Select the option to use a firewall,
or else without a firewall.
¾ Enable IGMP Multicast: This is disabled by default. This setting will not allow IGMP (Internet
Group Management Protocol) packets to be forwarded to the LAN. IGMP is used to manage
multicasting on TCP/IP networks. Most users will not need to enable this. Some ISPs use
IGMP to perform remote configuration for client devices, such as the Router. If you are
unsure, check with your ISP.
¾ Enable WAN Service: If you want to adopt the MER service, you have to select the option in