Ovislink Air Live Air4G, Руководство пользователя

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3. Making Configuration
AirLive Air4G User’s Manua
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For source or destination port, you can define a single port (80) or a range of ports
(1000-1999). Add prefix "T" or "U" to specify TCP or UDP protocol. For example, T80,
U53, U2000-2999, No prefix indicates both TCP and UDP are defined. An empty implies
all port addresses. Packet Filter can work with Scheduling Rules, and give user more
flexibility on Access control. For Detail, please refer to
Scheduling Rule.
Each rule can be enabled or disabled individually.
Click on “Save” to store your settings or click “Undo” to give up the changes.
3.3.3. Domain Filters
Domain Filter prevents users under this device from accessing specific URLs.