TD851W
150Mbps Wireless N ADSL2+ Modem Router User Guide
37
included in RIP broadcasts.
4.4.3 NAT
Choose “
Advanced Setup
→
NAT
” menu, you can set up 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 set up 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
