Patent ID: 7551615

Claim:
A method comprising: transmitting from a network node via a first interface of the network node, including receiving at the first interface a first data packet from a bus of the network node, sending the received first data packet from the first interface to a physical network interface of the network node, and sending the first data packet from the physical network interface to a network; transmitting from the network node via a second interface of the network node, including receiving at the second interface a second data packet from the bus of the network node, encapsulating the received second data packet to generate an encapsulated second data packet, receiving the encapsulated second data packet at the physical network interface of the network node, and sending the received encapsulated second data packet from the physical network interface to the network; and switching between the transmitting the first data packet from the network node via the first interface and the transmitting the encapsulated second data packet from the network node via the second interface based on a state generated by a network security station, the state including if the network node has been compromised.