Steps; Setup Many-To-One Nat Rules - D-Link DFL-900 User Manual

DFL-900/1500 User Manual Chapter 7
NAT
Figure 7-3 DFL-1500 plays the role as Virtual Server
As the above Figure 7-3 illustrates, the server 10.1.1.5 provides FTP service. But it is located on the DMZ region behind
DFL-1500. And DFL-1500 will act as a Virtual Server role which redirects the packets to the real server 10.1.1.5. And you
can announce to the internet users that there exists a ftp server IP/port is 61.2.1.1/44444. So, all the internet users will
just connect the 61.2.1.1/44444 to get ftp service.
7.4

Steps

7.4.1 Setup Many-to-one NAT rules

Step 1. Enable NAT ADVANCED SETTINGS > NAT > Status
Select the Basic from the list of Network
Address Translation Mode. Click Apply.
Now the DFL-1500 will automatically set the NAT
rules for LAN/DMZ zones. Namely, all internal
networks can establish connections to the outside
world if the WAN settings are correct.
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