Nat - Kraun ADSL2/2+ Wireless-N Router User Manual

Click ADD ROUTE button to add a new route in the next screen (shown in Figure 4-27).
y Destination IP Address: This parameter specifies the IP network address of the final destination.
y IP Subnet Mask: Enter the subnet mask for this destination.
y Gateway IP Address: Enter the IP address of the gateway. The gateway is an immediate neighbor of your
ADSL Router that will forward the packet to the destination. On the LAN, the gateway must be a router on the
same segment as your Router; over Internet (WAN), the gateway must be the IP address of one of the remote
nodes.
y Metric: Metric represents the "cost" of transmission for routing purposes. IP Routing uses hop count as the
measurement of cost, with a minimum of 1 for directly connected networks. Enter a number that approximates
the cost for this link. The number need not to be precise, but it must between 1 and 15. In practice, 2 or 3 is
usually a good number.
y Announced in RIP: This parameter determines if the ADSL 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.

4.4.3 NAT

Choose "Advanced SetupNAT" menu, you can setup the NAT (Network Address Translation) function for the
Router (shown in Figure 4-28).
y Virtual Circuit: Enter Virtual Circuit Index that you plan to setup for the NAT function.
y NAT Status: This field shows the current status of the NAT function for the current VC. You can go to the
previous screen (shown in Figure 4-6) to activate the function.
y Number of IPs; This field is to specify how many IPs are provided by your ISP for current VC. It can be single IP
or multiple IPs. We select Multiple to explain.
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 Map-
ping rules; for VCs with single IP, since they have only one IP, there is no need to individually define the
Address Mapping rule.
Figure 4-27
Figure 4-28
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