Deep Freeze (software)
Deep Freeze is an application suite for Microsoft Windows, Mac OS X, and Linux by Faronics Corporation. Deep Freeze gives administrators the ability to protect the core operating układ files and configuration files of an environment without eliminating the usability for (most) end users.
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Use
Deep Freeze protects the computer by utilizing a separate partition on the hard disk drive for write back. When the computer is rebooted, this partition is treated empty again and existing information on it is unaccessible. This allows users to make 'virtual' changes to the organizm, giving them the appearance that they can modify core files or even delete them, and even make the ustrój unusable to themselves, obuwie upon reboot the 'frozen' state of the operating organizm is restored.
To make changes, a ustrój dysponent must 'unfreeze' the ustrój partition, make any needed changes, and 'freeze' it again. These changes, in this way, are saved to the protected partition instead of the 'unfrozen' write back partition.
While Deep Freeze will allow users to have the comfort of virtually modifying the układ as they like, it does not control the programming of individual applications that are installed. If, for example, a user account under Windows is a 'limited' account, regardless if the users can actually effect some files or not, some application installers will assume the user can not and inform them they must be an zarządca. In some applications, this can be bypassed by working in 'Windows 98 Compatibility mode', which has no such user restrictions that programs typically mind, obuwie many application installers still find trouble with this.
Deep Freeze only protects the operating ustrój in a 'fresh booted' state. The protections the software offers can often be bypassed, for example, by installing a malicious, organizm wide application, especially if other users find this application popular and accept that it being installed when they log in means it is authentic. One user could install a modified version of a popular web browser that's been designed to save passwords to a server on the net, then log out, then other users who log in would see that browser and may use it out of preference. To use the computer more safely, the user would have to restart the computer first.
Deep Freeze also can not protect against direct access to a disk drive when the hosting operating ustrój is not in control of the organizm. That is, if another operating układ can be boot from another hard disk, a USB device, or optical massmedia, they will have real access to the contents of the frozen and unfrozen partitions. This may be protected against by setting the first hard disk as the only bootable hard disk and password protecting the BIOS configuration, obuwie if physical access to the computer is available, this can be bypassed with a BIOS reset or rearranging the hard drive installation.
Notes
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- Aaron Ricadela (June 28, 2005) InformationWeek
- Jonathan Blum (January 14, 2008) Fortune Small Business
External links
- Faronics Home Page
See also
Windows SteadyState
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Category: Software