Patent ID: 8270017

Claim:
A network card device having a first connecting unit configured to connect to a network and a second connecting unit configured to connect to an information processing apparatus, the device comprising: a receiving unit configured to receive data from the network through the first connecting unit; a processing unit configured to process the data received by the receiving unit; a rejection information registering unit configured to register rejection information indicating a specific source, wherein the network card device is not allowed to process data received from the specific source; a determining unit configured to, when the receiving unit receives data, determine whether information indicating a source of the received data is registered in the rejection information registering unit; a transmitting unit configured to, when the determining unit determines that the information indicating the source of the received data is not registered in the rejection information registering unit, transmit confirmation data to the information processing apparatus through the second connecting unit; and a control unit configured to allow the processing unit to process the received data in accordance with the result of transmission of the confirmation data by the transmitting unit.