System and method for reducing data stream interruption during failure of a firewall device
US8201235B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2010 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Oct 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/40
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system includes first and second firewalls and a controller. The first firewall is configured to perform a firewall function on a first redundant input data packet and output the first input packet as a first redundant output data packet according to the firewall function. The second firewall is configured to perform the firewall function on a second redundant input data packet and output the second input packet as a second redundant output data packet according to the firewall function. The output packets are at least substantially similar when the firewall devices function properly. The controller is configured to receive the output packets from the firewalls, transmit at a given time one of the output packets, transmit the first output packet while the second firewall is failed, and transmit the second output packet while the first firewall is failed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.