| 摘要 |
An interface device for interfacing between a networkable device such as a printer and a network, includes an isolation switch that permits isolation of the network from the networkable device. The interface device includes a hub and a circuit board, with the hub constructed with plural ports to repeat network transmissions received on one port to all other ports. The isolation switch is controllably operable to isolate the port to which the network is connected from network transmissions repeated by the hub. The isolation switch is operated under control of the circuit board, which implements network functionality for the networkable device. Particularly in cases where the networkable device is a printer, the extended network functionality provided by the circuit board may relate to secure printing. In such circumstances, the isolation switch can be operated so as to isolate the network from the printer, and thereby permit the circuit board to transmit decrypted print jobs in clear text to the printer without danger of interception over the network. |
