Port: Type the port range of the protocol.
IP Range: Type the IP range. IP addresses falling between this value and the
Range End are not allowed to access the Internet.
Add: Click to add the IP range to the table at the bottom of the screen.
Update: Click to update information for the range if you have selected a list
item and have made changes.
Delete: Select a list item and click Delete to remove the item from the list.
Cancel: Click the Cancel button to erase all fields and enter new information.