NetComm NB9 User Giude page 56

Field
External Port Start
External Port End
Protocol
Internal Port Start
Internal Port End
Save / Apply
56
YML790 Rev1
Means
The external port on the WAN side of your NB9/
NB9W that clients try to connect to. (e.g. port 80 on
the WAN side for clients trying to connect to a web
server).
The external port end on the WAN side of your NB9/
NB9W that clients try to connect to. (e.g. if you are
running a service that requires a range of ports to be
open you would enter the last port in the range here).
Select the protocol from the dropdown list. (e.g. if
you were hosting a video service you would select
UDP).
The internal port refers to the port on the server that
clients try to connect to. (e.g. port 80 on the WAN
side for clients trying to connect to a web server).
The internal port end on the server that clients try
to connect to. (e.g. if you are running a service that
requires a range of ports to be open you would enter
the last port in the range here).
Save and Apply the settings.
NB9/NB9W ADSL2+ VoIP Router