One-way data transfer device with onboard system detection

1. A data diode, comprising:

a first network interface circuitry comprising:

a first processing element;

a first network connector, coupled to the first processing element; and

a second network interface circuitry, comprising:

a second processing element; and

a second network connector, coupled to the second processing element;

a single one-way data bridge coupled between the first processing element and the second processing element that allows data flow from the first processing element to the second processing element and physically prohibits data flow from the second processing element to the first processing element;

a first firmware comprising instructions that when executed cause the first processing element to:

automatically determine that a first protocol of a first predetermined plurality of protocols is used for communications via the first network connector; and

configure the first processing element to receive data using the first protocol and transmit the data across the one-way data bridge to the second processing element responsive to the determination; and

a second firmware comprising instructions that when executed cause the second processing element to:

automatically determine that a second protocol of a second predetermined plurality of protocols is used for communications via the second network connector; and

configure the second processing element to transmit data received across the one-way data bridge by the second processing element using the second protocol, responsive to the determination,

wherein the first protocol is different from the second protocol.

2. The data diode of claim 1 , wherein the one-way data bridge is an optocoupler.

3. The data diode of claim 1 , wherein the one-way data bridge is an infrared device.

4. The data diode of claim 1 , wherein the one-way data bridge is an acoustical device.

5. The data diode of claim 1 , further comprising:

a tamper-resistant housing in which is disposed the first network interface circuitry, the second network interface circuity, the one-way data bridge, the first firmware, and the second firmware.

6. The data diode of claim 5 , wherein the tamper-resistant housing comprises a transparent window allowing external viewing of the interior of the tamper-resistant housing.

7. The data diode of claim 1 ,

wherein the first network interface circuitry comprises a plurality of different network connectors, each coupled to the first processing element, and

wherein the first firmware further comprises instructions that when executed cause the first processing element to identify which of the plurality of different network connectors provides data received by the first processing element and configures the first processing element responsive to the identification.

8. The data diode of claim 1 , wherein the first network connector comprises a local area network connector.

9. The data diode of claim 1 , wherein the first network connector comprises a point-to-point serial connector.

10. The data diode of claim 1 , wherein the first network connector is of a different type than the second network connector.

11. The data diode of claim 1 ,

wherein the second network interface circuitry comprises a plurality of different network connectors, each coupled to the second processing element, and

wherein the second firmware further comprises instructions that when executed cause the second processing element to identify which of the plurality of different network connectors provides data received by the second processing element and configures the second processing element responsive to the identification.

12. The data diode of claim 1 ,

wherein the first network interface circuitry further comprises a first power connector, coupled to the first processing element for providing power to the first processing element, and

wherein the second network interface circuitry further comprises a second power connector, coupled to the second processing element for providing power to the second processing element.

13. The data diode of claim 1 , wherein the first network interface circuitry and the second network interface circuitry are separately grounded.

14. The data diode of claim 1 , wherein the instructions that when executed cause the first processing element to automatically determine which of a predetermined plurality of protocols is used for communications via the first network connector comprise instructions that when executed cause the first processing element to sequence between a predefined set of pre-loaded control protocols.

15. The data diode of claim 1 , wherein the instructions that when executed cause the second processing element to automatically determine which of a predetermined plurality of protocols is used for communications via the second network connector comprise instructions that when executed cause the second processing element to sequence between a predefined set of pre-loaded control protocols.

16. The data diode of claim 1 , wherein the first firmware further comprises instructions that when executed cause the first processing element to encrypt data received via the first network connector.

17. The data diode of claim 1 , wherein the second firmware further comprises instructions that when executed cause the second processing element to encrypt data transmitted via the second network connector.

18. The data diode of claim 1 , wherein the first firmware comprises instructions to collect data via the first network connector and report the data at a pre-determined interval.

19. The data diode of claim 1 , wherein the first firmware comprises instructions to collect data via the first network connector and report the data upon a change in the collected data.

20. The data diode of claim 1 , wherein the data diode is not configurable on-site.