Control Access to the Internet
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N300 WiFi Cable Modem Router Model C3000
•To block the services all the time, select the Always radio button.
•To block the services based on a schedule, select the Per Schedule radio button.
To specify the schedule, see Schedule When to Block Internet Sites and Services on
page 30.
6. Click the Add button.
7. To add a service that is in the Service Type list, select the application or service.
The settings for this service automatically display in the fields.
8. To add a service or application that is not the list, select User Defined.
a. If you know that the application uses either TCP or UDP, select the appropriate
protocol; otherwise, select TCP/UDP (both).
b. Enter the starting port and ending port numbers:
If the service uses a single port number, enter that number in both fields.
To find out which port numbers the service or application uses, you can contact the
publisher of the application, ask user groups or newsgroups, or search on the
Internet.
9. To specify how to filter the services, select one of the following radio buttons:
•Only This IP Address. Block services for a single computer.
•IP Address Range. Block services for a range of computers with consecutive IP
addresses on your network.
•All IP Addresses. Block services for all computers on your network.
10. Click the Add button.
Your changes are saved.