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TD-W8151N 150Mbps Wireless N ADSL2+ Modem Router User Guide

4.4.3 NAT

Choose “Advanced Setup→NAT” menu, you can setup the NAT (Network Address Translation)

function for the Router (shown in Figure 4-26).

Figure 4-26

¾ Virtual Circuit: Enter Virtual Circuit Index that you plan to setup for the NAT function.

¾ 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 4-4) to activate the function.

¾ 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.

4.4.3.1 DMZ

Choose “Advanced Setup→NAT→DMZ” in Figure 4-26, you can configure the DMZ host in the

next 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.

Figure 4-27

¾ DMZ Host IP Address: Enter the specified IP Address for DMZ host on the LAN side.