Filter driver for blocking access by host to devices
US6820146B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Jun 7, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2141
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A filter driver code arrangement (on a computer-readable medium for use in a system having a bus, a host connected to the bus and one or more devices connected to the bus), which prevents access by the host to any of the devices for which the host does not have respective access permission. Such a filter driver includes: an intercept code portion to intercept a set of data identifying one or more devices connected to the bus, respectively; a determination code portion to determine, based upon the data set and a permission set representing permission relationships between the host and the one or more devices, whether the host has permission to access each of the one or more devices; and a change code portion to change the data set to block access by the host to any of the one or more devices for which the host does not have access permission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.