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The parameters are described as follows:
Name – This is a 12 character, alphanumeric, user-defined name, used to identify
the network address translation.
Global Interface – This is the interface corresponding to the Global IP and
Range parameters, in the NAT table, to form unique IP address[es], known to the
outside (regional or Internet) routers, on this interface.
Local Interface – This is the interface corresponding to the Local IP and Range
parameters, in the NAT table, to form local IP address[es], known only to this
interface and the network within.
Translation Mode – This offers four types of NATs.
Static NAT – Maps one global IP address to one local IP address. After all
global IP addresses are assigned, they will remain static. This option may be
necessary for email, web, ftp servers, etc. where static IP addresses are
essential for operation.
Dynamic NAT – Maps one global IP address to one local IP address. Global
IP addresses will be dynamically reassigned to different local IP addresses if
not currently being used. This allows a larger number of users to use a small
number of IP addresses.
Static NAPT – One to one mapping of UDP/TCP port numbers to let
packets with specific UDP/TCP port numbers enter the local IP domain. The
NAPT map table will not age. This option may be necessary for email, web,
ftp servers, etc. where static port numbers are essential for operation. Setting
the global port number to 0 opens port numbers 1024 to 65535 for the
designated local IP address, creating a visible computer. This allows a
computer to be freely accessed by other computers on the Internet, which is
necessary for some applications to function correctly when using NAPT,
including Microsoft NetMeeting, CUSeeMe, etc.
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DI-206 ISDN Remote Router
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