Firewall system
US8108679B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 2005 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Oct 14, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/123
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A firewall system employs signature validation hardware communicating via low level communication protocols and with inner and outer host computers, which have network protocol stacks and for implementing complex communication protocols with remote source and destination computers. The source computer has data checker and signature functionalities, which respectively check data and generate digital signatures for data to be transmitted. The inner host computer receives transmitted data and converts it to a lower protocol level at which the hardware operates. The hardware uses digital circuitry for protocols and checking. It validates signatures in data at a software application level, but only requires protocols that are simple and low level. The firewall system communicates with the source and destination computers via high performance connection media. The hardware itself communicates with the host computers also via high performance connection media, and avoids involvement with complex communications protocols which make other firewalls vulnerable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.