Serial in-line communication guard
US10877912B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Sep 27, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication network includes a low integrity device, a high integrity device, a communication bus communicably coupling the low integrity device and the high integrity device together, and a communication guard inserted in-line along the communication bus. The communication guard includes a filter configured to store one or more rules defining at least one of a rate, a size, or a content type that is permissible for data transmissions from the low integrity device to the high integrity device; receive a respective data transmission from the low integrity device; evaluate characteristics of the respective data transmission relative to the one or more rules; and prevent the respective data transmission from passing through the communication guard to the high integrity device in response to the characteristics of the respective data transmission failing to comply with at least one of the one or more rules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.