Secure remote access to historical data

1. A method for providing access to historical data over a real-time tunnel, the method comprising:

establishing, by a first connector, a first tunnel connection between the first connector and a second connector, the first tunnel connection being established by using an outbound connection request from the first connector;

establishing, by a third connector, a second tunnel connection between the third connector and a fourth connector, the second tunnel connection being established by using an outbound connection request from the third connector;

obtaining by the first connector, data;

propagating the data from the first connector to the second connector through the first tunnel connection;

receiving, by the second connector, the data via the first tunnel connection;

propagating the data, by the second connector to the third connector via the fourth connector and the second tunnel connection; and

wherein the data includes historical data.

2. The method of claim 1 , wherein the first connector, the second connector, the third connector and the fourth connector are in a same network.

3. The method of claim 1 , further comprising:

configuring a first network to include the first connector;

configuring a second network to include the second connector;

configuring a third network to include the third connector;

configuring a fourth network to include the fourth connector; and

separating each of the first network, the second network, the third network, and the fourth network by a respective firewall.

4. The method according to claim 3 , further comprising:

receiving, by the second network, an inbound connection.

5. The method according to claim 3 , further comprising:

making, by the first network, an outbound connection.

6. The method according to claim 1 , further comprising:

initiating, by any one of (i) the first connector, (ii) the second connector, (iii) the third connector or (iv) the fourth connector, a connection; and

storing, by the connector initiating the connection, security information.

7. The method according to claim 1 , further comprising:

retrieving, by the first connector, historical data from a first historian;

transmitting, by the first connector, the historical data over the first tunnel connection to the second connector;

propagating, by the second connector, the historical data to a second historian; and

retrieving, by the second connector the historical data from the second historian.

8. A system for providing access to historical data over a real-time tunnel, the method comprising:

a first device that operates as a first connector configured to establish, by using an outbound connection request from the first connector, a first tunnel connection with a second device that operates as a second connector and to receive data from a data source;

a third device that operates as a third connector configured to establish, by using an outbound connection request from the third connector, a second tunnel connection with a fourth connector;

the first connector configured to propagate the data to the third connector through the first tunnel connection and the second tunnel connection;

the second connector configured to:

receive the data via the first tunnel connection, and

propagate the data to the third connector via the fourth connector and the second tunnel connection; and

wherein the data includes historical data.

9. The system of claim 8 , wherein the first connector, the second connector, the third connector and the fourth connector are in a same network.

10. The system of claim 8 , wherein:

the first connector is configured to be included in a first network;

the second connector is configured to be included in a second network;

the third connector is configured to be included in a third network;

the fourth connector is configured to be included in a fourth network; and

each of the first network, the second network, the third network, and the fourth network is configured to be separated by a respective firewall.

11. The system according to claim 10 , wherein the second network is configured to receive an inbound connection.

12. The system according to claim 8 , wherein:

at least one of (i) the first connector, (ii) the second connector, (iii) the third connector and (iv) the fourth connector further configured to:

initiate a connection; and

store, by the connector initiating the connection, security information.

13. The system of claim 8 , further comprising:

the first connector further configured to:

retrieve historical data from a first historian;

transmit the historical data over the first tunnel connection to the second connector;

propagate, by the second connector, the historical data to a second historian; and

retrieve, by the second connector the historical data from the second historian.

14. The system of claim 10 , wherein the first network is configured to make an outbound connection.

15. A non-transitory computer-readable medium having stored thereon one or more sequences of instructions for causing one or more processors to perform:

establishing, by a first connector, a first tunnel connection from the first connector to a second connector, the first tunnel connection being established by using an outbound connection request from the first connector;

establishing, by a third connector, a second tunnel connection from the third connector to the second connector, the second tunnel connection being established by using an outbound connection request from the third connector;

obtaining by the first connector, data;

propagating the data from the first connector to the third connector through the first tunnel connection and the second tunnel connection;

receiving, by the second connector, the data via the first tunnel connection;

propagating the data, by the second connector to the third connector via the fourth connector and the second tunnel connection; and

wherein the data includes historical data.

16. The non-transitory computer-readable medium of claim 15 , further having stored thereon a sequence of instructions for causing the one or more processors to perform:

retrieving, by the first connector, historical data from a first historian;

transmitting, by the first connector, the historical data over the first tunnel connection to the second connector;

propagating, by the second connector, the historical data to a second historian; and

retrieving, by the second connector the historical data from the second historian.

17. The non-transitory computer-readable medium of claim 15 , further having stored thereon a sequence of instructions for causing the one or more processors to perform:

establishing, by the third connector a second tunnel connection with the second connector;

receiving, by the third connector the data; and

sending, by the third connector the data to a third historian.

18. The non-transitory computer-readable medium of claim 15 , wherein the first connector, the second connector, the third connector and the fourth connector are in a same network.

19. The non-transitory computer-readable medium of claim 15 , further having stored thereon a sequence of instructions for causing the one or more processors to perform:

configuring a first network to include the first connector;

configuring a second network to include the second connector;

configuring a third network to include the third connector;

configuring a fourth network to include the fourth connector; and

separating each of the first network, the second network, the third network, and the fourth network by a respective firewall.

20. The non-transitory computer-readable medium of claim 19 , further having stored thereon a sequence of instructions for causing the one or more processors to perform:

receiving, by the second network, an inbound connection.