Patent ID: 8078892

Claim:
An information-processing apparatus comprising: a connecting unit that connects to a network; a processor including a communication control unit that communicates with an external network device via the connecting unit; a power control unit that switches a power mode between a first power mode in which a power is supplied to all elements and a second power mode in which a power supply is limited to selected elements; and a packet processing unit that is connected between the connecting unit and the processor, wherein the packet processing unit includes a first determining unit that performs a packet filtering based on an address included in a packet received through the connecting unit, and determines whether a packet processing is needed for a packet received through the connecting unit when the power mode is set to the second power mode, and a second determining unit that determines, when the first determining unit determines that the packet processing is needed for the packet, whether the packet processing is available in the packet processing unit, and the power control unit switches the power mode based on a result of determination by the second determining unit.