BenQ ESG-103 - Manual (Page 22)

Chapter 3 Configuration - 18
Service Name - Name this service in 10 characters.
Port Number - The port is opened to others in the Internet side.
Server IP Address - The server's private IP address in the LAN side
Server Port Number - The port of the inside server which is listening
3.3.3.2 Dynamic NAT
In the first table, you can assign a range of private IP addresses that can be
converted to public ones.
Base Address - The first IP address that you wish to be converted from
private to public.
Number of Address - The number of the private IP addresses which are
configured by users. Ex. If you have five hosts to
be converted to public IP addresses, you can put 5
in this box.