System for secure transfer of information from an industrial control system network
US8997202B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2012 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Dec 6, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0209
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for securely transferring information from an industrial control system network, including, within the secure domain, one or more remote terminal units coupled by a first network, one or more client computers coupled by a second network, and a send server coupled to the first and second networks. The send server acts as a proxy for communications between the client computers and the remote terminals and transmits first information from such communications on an output. The send server also transmits a poll request to a remote terminal unit via the first network and transmits second information received in response to the poll on the output. The system also includes, outside the secure domain, a receive server having an input coupled to the output of the send server via a one-way data link. The receive server receives and stores the first and second information provided via the input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.