300Mbps Wireless N ADSL2+ Modem Router
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networks. Enter a number that approximates the cost for this link. The number need not to
be precise, but it must be between 1 and 15. In practice, 2 or 3 is usually a good number.
• Announced in RIP: This parameter determines if the ADSL modem router will include the
route to this remote node in its RIP broadcasts. If set to Yes, the route to this remote node
will be propagated to other hosts through RIP broadcasts. If No, this route is kept private
and is not included in RIP broadcasts.
4.3.3 NAT
Go to Advanced Setup → NAT, you can set up the NAT (Network Address Translation) function
for the Modem router.
• Virtual Circuit: Enter Virtual Circuit Index that you plan to set up for the NAT function.
• NAT Status: This field shows the current status of the NAT function for the current VC.
You can go to the previous screen to activate the function.
Note:
For VCs with single IP, they share the same DMZ and Virtual servers; for VCs with multiple IPs,
each VC can set DMZ and Virtual servers. Furthermore, for VCs with multiple IPs, they can
define the Address Mapping rules; for VCs with single IP, since they have only one IP, there is
no need to individually define the Address Mapping rule.
4.3.3.1 DMZ
Go to Advanced Setup → NAT → DMZ, you can configure the DMZ host in the following screen.
A DMZ (demilitarized zone) is a host between a private local network and the outside public
network. It prevents outside users from getting direct access to a server that has company
data. Users of the public network outside the company can access to the DMZ host.
• DMZ Host IP Address: Enter the specified IP address for DMZ host on the LAN side.
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