Ubee Interactive Using the Forwarding Option
Ubee DDW3611 Wireless Cable Modem Gateway Subscriber User Guide • November 2012 47
5.11 Using the Forwarding Option
Port forwarding allows you to tell the cable modem which computer on the local area
network to send the data. You can set up applications/services to listen on one internal
port. External Internet users who want to access that application address it using an
external port, such as an Audio server.
Use port forwarding to resolve issues when:
Data is sent from a local host to the Internet, but your local host does not receive
the expected data
An application or service running on your local network (on local host) cannot be
accessed from the Internet directly (for example, a request to a local audio server).
Some examples of when you might need forwarding:
Xbox/PlayStation
– Games/applications.
Home Security Systems
– Security systems that use the Internet.
Audio Servers/VoIP
– Audio and VoIP applications and services.
Port forwarding requires the following information:
IP address of each local host system (for example, Xbox) for port forwarding rule
you need to set up. See Using the Client List Option on page 83 to obtain the MAC
and IP address of the internal host for which you are setting up a forwarding rule.
Port numbers to which the local host’s application listens to detect incoming
requests/data. For example, a game or other service. Port numbers are usually
available in the documentation associated with the application, or refer to
http://portforward.com.
If your host system/application does not have communication issues with the Internet,
you do not need port forwarding
See the following topics:
Before Setting Up Forwarding Rules on page 47
Assigning a Static Lease on page 48
Setting Up Forwarding for an Xbox (Example): on page 48
Viewing Port Maps on page 50
5.11.1 Before Setting Up Forwarding Rules
Before you set up forwarding rules, we recommend you enable UPnP to see if this
resolves your communication issue. See Using the Advanced Gateway Options.
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