User guide

Security 49
4. Click Security > Firewall > Block Services.
Tip: For information about how to specify the schedule, see Schedule When to Block
Internet Sites and Services.
5. 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.
6. To add a service or application that is not the list, click the Add button.
The Services screen displays.
7. In the Service Name field, type the name of the service.
8. If you know that the application uses either TCP or UDP, select the appropriate protocol;
otherwise, select TCP/UDP (both).
9. Enter the starting port and ending port numbers. If the service uses a single port
number, enter that number in both fields.
Tip: 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.