TP-Link TD-W8961N TD-W8961N V1 User Guide 1910010964 - Page 47

NAT

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TD-W8961N 300Mbps Wireless N ADSL2+ Modem Router User Guide  Gateway IP Address: Enter the IP address of the gateway. The gateway is an immediate neighbor of your ADSL modem router that will forward the packet to the destination. On the LAN, the gateway must be a modem router on the same segment as your modem router; over Internet (WAN), the gateway must be the IP address of one of the remote nodes.  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.  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. 4.4.3 NAT Choose "Advanced Setup→NAT" menu, you can setup the NAT (Network Address Translation) function for the Modem router (shown in Figure 4-28). Figure 4-28  Virtual Circuit: Enter Virtual Circuit Index that you plan to setup 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 (shown in Figure 4-6) to activate the function.  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 Mapping rules; for VCs with single IP, since they have only one IP, there is no need to individually define the Address Mapping rule. 39

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TD-W8961N
300Mbps Wireless N ADSL2+ Modem Router User Guide
39
Gateway IP Address:
Enter the IP address of the gateway. The gateway is an immediate
neighbor of your ADSL modem router that will forward the packet to the destination. On the
LAN, the gateway must be a modem router on the same segment as your modem router;
over Internet (WAN), the gateway must be the IP address of one of the remote nodes.
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.
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.
4.4.3 NAT
Choose “
Advanced Setup
→
NAT
” menu, you can setup the NAT (Network Address Translation)
function for the Modem router (shown in Figure 4-28).
Figure 4-28
Virtual Circuit:
Enter Virtual Circuit Index that you plan to setup 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 (shown in Figure 4-6) to activate the function.
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 Mapping rules; for VCs with single IP, since they have only one IP, there is no need
to individually define the Address Mapping rule.