Red Hat Enterprise Linux 5.3 includes support for block device encryption using the Linux Unified Key Setup (LUKS) specification. Encrypting a device protects all data on a block device against unauthorized access, even if the device has been physically removed from a system. To access the contents of an encrypted device, a user must provide a passphrase or key as authentication.
For information on setting up disk encryption, refer to the Red Hat Enterprise Linux Installation Guide:
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