D-Link DFL-1500 [77/271] Nat modes introduction

DFL-900/1500 User Manual Chapter 7

NAT

Redirect to

internal server

under

The subnet which is located the virtual server.

LAN / DMZ

regions

DMZ1

Internal IP

The IP address which is actually transferred to

the internal DMZ.

IPv4 format 10.1.1.5

Action

Port

The port number which is actually transferred to

the internal DMZ.

If you filled 0 in this field, it means that the real

connected port is the same as the translated

destination port.

0 ~ 65534 21

Table 7-3 Add a Virtual Server rule

Step 9. View the Result

Now any request towards the DFL-1500’s WAN1

IP (61.2.1.1) with port 44444 will be translated

into a request towards 10.1.1.5 with port 21,

and then be forwarded to the 10.1.1.5. The

FTP server listening at port 21 in 10.1.1.5 will

pick up the request.

ADVANCED SETTINGS > NAT > Virtual Servers

7.5 NAT modes introduction

7.5.1 Many-to-One type

Figure 7-4 NAT Many-to-One type

As the above

Figure 7-4 illustrated, NAT Many-to-One type means that many local PCs are translated into only one public IP

address when the packets are forwarded out through the DFL-1500. Take Connection1 for example. Its IP address and port are