4-Port ADSL Router User Manual

Adding NAT Rules
71
5.
In the [Global Address From:] and [Global Address To:] fields,
type the public IP address assigned to you by your ISP.
If you have multiple WAN (PPP) interfaces, this rule will
not be enforced for data that arrives on other PPP interfaces.
This rule will not be enforced for data that arrives on WAN
interfaces not specified here.
If you have multiple WAN interfaces and want the rule to be
enforced on more than one of them (or all), type the starting
and ending IP addresses of the range.
6.
In the [Destination Port From:] and [Destination Port To:]
fields, type the port ID numbers of the computer you are
making publicly available.
You can specify a range using the [From/To] fields if you want
the rule to apply to a range of port types, or enter the same
port number in both fields.
A port ID identifies the specific function of the computer
connected to it, and therefore can limit the types of data
that pass to and from the computer.
For example, Web (HTTP) servers are usually identified by
port number 80; packets containing traffic destined for a
Web server will contain this port ID. The Internet Assigned
Numbers Authority (IANA) assigns port numbers for common
types of servers and functions.
7.
If the LAN computer that you are making publicly available
is configured to use a non-standard port number for the type
of traffic it receives, type the non-standard port number in the
[Local Port:] field.
This option translates the standard port number in packets
destined for your LAN computer to the non-standard number