Wellink Corporation NEOBIT1014VA ユーザーズマニュアル

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, 

enter the port ID (or a range) that you expect to see on 
incoming packets destined for the LAN computer for which 
this rule is being created. 

Incoming traffic that meets this criteria will be redirected to the 
Local Port number you specify in the next field. 

For example, if you grant public access to a Web server on 
your LAN, you would expect that incoming packets destined for 
that computer would contain the well-known web server port 
number, 80. This setting serves as a filter; data packets not 
containing this port number would not be granted access to you 
local computer.   

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 
you specify. For example, if your Web server uses (non-
standard) port 2000, but you expect incoming data packets to 
refer to (standard) port 80, you would enter 2000 here and 80 in 
the Destination Port fields. The headers of incoming packets 
destined for port 80 will be modified to refer to port 2000. The 
packet can then be routed appropriately to the web server. 

8.  Follow steps 7-12 under "The napt rule" on page 68 to 

submit your changes.