Apparatus and method for connecting computer networks
US9413717B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2013 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Jun 19, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Apparatus (104) for connecting two or more computer networks having two or more network interface machines (201, 202, 203) each arranged to be connected to a respective computer network with a bidirectional communications link (105, 106, 107) enabling the network interface machine to receive data from and transmit data to the computer network. The network interface machines are connected together with at least one content checker (210, 211) to enable data to be transmitted from one network interface machine to another, and arranged such that data transmitted from one network interface machine to another network interface machine must pass via a content checker. Each network interface machine is arranged to transmit flow control data. The network interface machines are connected to the content checkers only by unidirectional communications links. This provides an interconnection between networks with different security classifications with the advantages of bidirectional communication links but avoiding the risks of such links.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.