Filter driver for blocking access by host to devices
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United States of America Patent
Stats
-
Nov 16, 2004
Grant Date -
Apr 1, 2004
app pub date -
Oct 1, 2002
filing date -
Oct 1, 2002
priority date (Note) -
In Force
status (Latency Note)
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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.
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