Prestige 650HW ADSL Router
7-14 NAT
Table 7-6 Menu 15.1.1.1 — Editing/Configuring an Individual Rule in a Set
FIELD DESCRIPTION EXAMPLE
End This is the ending global IP address (IGA). This field is
N/A
for
One-to-One
,
Many-to-One
and
Server types
.
N/A
Server
Mapping
Set
Only available when
Type
is set to
Server
.
Type a number
from 1 to 10 to choose a server set from menu 15.2.
Once you have finished configuring a rule in this menu, press [ENTER] at the message “Press
ENTER to Confirm…” to save your configuration, or press [ESC] to cancel.
7.4 NAT Server Sets – Port Forwarding
A NAT server set is a list of inside (behind NAT on the LAN) servers, for example, web or FTP, that you
can make visible to the outside world even though NAT makes your whole inside network appear as a
single machine to the outside world.
Use
Menu 15 - NAT Setup
to forward incoming service requests to the server(s) on your local network.
You may enter a single port number or a range of port numbers to be forwarded, and the local IP address of
the desired server. The port number identifies a service; for example, web service is on port 80 and FTP on
port 21. In some cases, such as for unknown services or where one server can support more than one service
(for example both FTP and web service), it might be better to specify a range of port numbers.
In addition to the servers for specified services, NAT supports a default server. A service request that does
not have a server explicitly designated for it is forwarded to the default server. If the default is not defined,
the service request is simply discarded.
Many residential broadband ISP accounts do not allow you to run any server
processes (such as a Web or FTP server) from your location. Your ISP may
periodically check for servers and may suspend your account if it discovers any
active services at your location. If you are unsure, refer to your ISP.
The most often used port numbers are shown in the following table. Please refer to
RFC 1700
for further
information about port numbers. Please also refer to the included disk for more examples and details on
NAT.