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WebSTAR DPR2320 and EPR2320 Gateway Cable Modems User’s Guide
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Configuring and Enabling TCP and UDP Port Filters
Use the Setup Advanced Settings – Port Filtering page to configure and enable
TCP and UDP port filters. These filters prevent a range of TCP/UDP ports from
accessing the Internet. You can also prevent PCs from sending outgoing
TCP/UDP traffic to the WAN on specific IP port numbers. This filter is not IP
address- or MAC address-specific. The system blocks the specified port ranges
for all PCs.
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
gateway cable modem default advanced port filtering settings.
Click Port Filtering in the Advanced Settings section of the Setup page to
access the Setup Advanced Settings – Port Filtering page.
Setup Advanced Settings – Port Filtering Page Example
The following illustration is an example of the Setup Advanced Settings – Port
Filtering page.
Setup Advanced Settings – Port Filtering Page Description
Use this page to enter and enable the desired port filtering ranges and protocols
in the appropriate fields and then click Apply to apply and save your new port
filtering settings.