User's Manual

UTT Technologies Chapter 8 NAT
http://www.uttglobal.com Page 205
Figure 8-3 Port Forwarding Settings - Example One
8.1.5.2 Example Two
An organization wants a LAN server (IP Address: 192.168.16.100) to open ftp service
(Protocol: TCP; Port: 20, 21) to the outside users. And the Device will use 2020 and 2021
as the external ports and the WAN2 IP address (200.200.201.18 in this example) as the
external IP address. As the ftp service uses two ports, so we need set the Port Count to 2.
Then all the requests for ftp from outside users to 200.200.201.18:2020 or
200.200.201.18:2021 will be forwarded to 192.168.16.100:20 or 192.168.16.100:21.
The following figure shows the detailed settings.
Figure 8-4 Port Forwarding Settings - Example Two
8.1.5.3 Example Three
An organization obtains eight public IP addresses (from 218.1.21.0/29 to 218.1.21.7/29)