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filter driver

   Also found in: Wikipedia 0.03 sec.

filter driver

A Windows driver that adds value to peripheral devices or supports a specialized device in the PC. Either written by Microsoft or the vendor of the hardware, any number of filter drivers can be added to Windows. Upper level filter drivers sit above the primary driver for the device (the function driver), while lower level filter drivers sit below the function driver and above the bus driver.

Filters may work on a certain brand of device such as a mouse or keyboard, or they may perform some operation on a class of devices, such as any mouse or any keyboard. Another type of filter driver is the bus filter driver, which may be added on top of the bus driver. For example, an ACPI bus filter is added to support power management for each device (see ACPI). See driver.



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This filter driver is able to monitor and capture all change instructions to the files and replicate these changes to the target.
The product employs a patented TruStor real-time I/O filter driver technology to set and enforce quotas on storage usage, prevents unwanted file types from wasting storage space, and uses web-based "ActiveReports" to enable fast and easy file cleanup.
HP ProtectTools Application Manager solves this issue by operating a kernel-level filter driver that intercepts all file execution requests to determine if the request is authorized or not.
 
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