For information about how to specify the schedule, see Schedule When to Block Internet Sites and
Services on page 60.
6. Click the Add button.
7. To add a service that is in the Service Type menu, 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 in the menu, 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. Select a filtering option:
•
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 lP Addresses. Block services for all computers on your network.
10. Click the Add button.
Control Access to the Internet
59
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