Patent attributes
In one embodiment, a secure network system includes a two-way bridge connecting a protected packet data network with an external packet data network so as so allow bidirectional communication between the protected and external networks, a one-way link unidirectionally connecting the protected network to the external network and physically configured to carry signals in one direction from the protected network to the external network and to be incapable of carrying signals in the opposite direction from the external packet data network to the protected packet data network, and a security server to receive an indication of a security threat to at least one of the networks, and in response to the indication, to deactivate the two-way bridge and activate the one-way link so as to prevent the protected network from receiving packets from the external network while allowing forwarding of packets from the protected network to the external network.
