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Chapter 9 Network
Media Server User’s Guide
182
The following table describes the labels in this screen.
9.6 The PPPoE Screen
Use this screen to configure PPPoE settings for a direct Internet connection.
Table 34 Network > UPnP > Port Mapping
LABEL DESCRIPTION
LAN Use these fields to specify what port the Internet gateway uses to connect from its LAN
port to the service on the NSA.
Service Name This read-only field identifies a service on the NSA.
LAN Port Specify the port number (1~65,536) the Internet gateway needs to use to connect from
its LAN port to the service on the NSA. This is the NSA’s internal port number for the
service. Changing a service’s port number in this screen also changes it in other NSA
screens that display it. Similarly, changing a service’s port number in another NSA screen
also changes it here.
The number below this icon is your Internet gateway’s WAN IP address (the IP address
your Internet gateway uses for connecting to the Internet).
WAN Use these fields to specify what port Internet users must use to connect to the Internet
gateway’s WAN port in order to connect to the service on the NSA.
Service Name This read-only field identifies a service on the NSA.
Enable WAN
Access
Select this check box to have UPnP configure your Internet gateway to allow access from
the Internet to the NSA’s service.
If you clear this check box, people will not be able to access the NSA’s service from the
Internet unless you manually configure the Internet gateway’s firewall and NAT rules to
allow access.
WAN Port When you enable WAN access for one of the NSA’s services, specify the port number
(1~65,536) Internet uses need to use to connect to the Internet gateway’s WAN port in
order to access the service on the NSA. Whoever wants to access a service on the NSA
from the Internet must use this port number.
P2P download’s WAN port must be the same as the LAN port.
Make sure there is not another service using TCP protocol with the same port number. See
Appendix C on page 403 for a list of common services and their associated protocols and
port numbers.
If another device is using the same port (the Internet gateway has the same port number
mapped to another LAN IP address), the NSA overwrites it when you apply the setting and
WAN users can no longer access the other device.
This icon means the service’s LAN and WAN port numbers must be the same.
This icon means another service is using the same port number as this service. Change
the port number of one of the services so they use different port numbers.
This icon means another service is using the listed port, but the port the other service is
using will be replaced if you apply the setting. The other service will no longer be
accessible from the listed port.
Apply Click Apply to save your changes back to the NSA.
Reset Click Reset to begin configuring this screen afresh.