WebSTAR DPR300 Series Cable Modem Gateway User’s Guide
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Setup Advanced Settings – Port Forwarding Page Description
The following example illustrates how to use the port forwarding feature to
configure the Microsoft X-Box Online Live for Internet gaming.
1.
Set the X-Box to a fixed IP address, for example,
192.168.0.5
.
2.
Enter the same IP address (192.168.0.5) in the Local IP Address field as
the first entry in the Port Forwarding area of the page.
3.
Enter
88
in
both
the Start Port and End Port fields in the same row you
used in step 2.
4.
Select
UDP
from the drop-down list in the Protocol field in the same row
you used in steps 2 and 3, and then select the box in the
Enable
field.
5.
Enter the same IP address you entered in step 2 as the second entry in
the Port Forwarding area of the page.
6.
Enter
3074
in
both
the Start Port and End Port fields in the same row you
used in step 5.
7.
Select
Both i
n the same row you used in steps 5 and 6, and then select
the box in the
Enable
field.
8.
Click
Apply
to apply and save your new port forwarding settings.
Configuring TCP/UDP Port Triggers
Use the Setup Advanced Settings – Port Triggers page to configure TCP/UDP
port triggers. Port triggering is similar to port forwarding but is dynamic. In other
words, the system does not hold the ports open indefinitely. For example, when
the cable modem gateway detects outgoing data on a specific IP port number set
in the “Trigger Range,” the resulting ports set in the “Target Range” open for
incoming data. If the system detects no outgoing traffic on the “Trigger Range”
ports for a period of 10 minutes, the “Target Range” ports close. This is a safer
method for opening specific ports for special applications, such as, video
conferencing programs, interactive gaming, and file transfer in chat programs.
This is safe because the ports are dynamically triggered and not held open
continuously, or erroneously left open by the router administrator. Therefore,
these ports are not exposed and vulnerable for potential hackers to discover.
If you are not familiar with the advanced settings detailed in this section,
contact your cable service provider before you attempt to change any of the
cable modem gateway default advanced port triggers settings.
Click
Port Triggers
in the Advanced Settings section of the Setup page to
access the Setup Advanced Settings – Port Triggers page.
