Star Tech Development BR4100DC - Manual (Page 28)

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NAT
Network Address Translation (NAT) helps you conserve IP addresses by allowing many
multiple local users to access the Internet through far fewer public IP addresses. NAT
also provides firewall protection from hacker attacks and allows you to map private IP
addresses to public IP addresses for key services such as websites or FTP.
Address Mapping
Address Mapping allows you to map or translate your private LAN IP addresses to
different public IP addresses used for the Internet. This allows you to limit the number of
Public IP addresses purchased from your ISP and maintains the privacy and security of
the LAN. The router essentially allows a pool of local Private IP addresses to be mapped
to one or more Public IP addresses.
When you are satisfied with your Address Mapping settings, click Apply.
Parameter Description
Address Mapping Enter your Public IP address that exists on the
Internet. On the line below, enter the range of
virtual, Private IP addresses (LAN PC clients) that
will share the designated Public IP address when
accessing the Internet.
NOTE: You will need to give your LAN PC client(s)
a fixed/static IP address for Address Mapping to
work.