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sensitive data

Linux / UNIX: Encrypt Backup Tape Using Tar & OpenSSL

How do I make sure only authorized person access my backups stored on the tape drives (DAT, DLT, LTO-4 etc) under Linux or UNIX operating systems? How do I backup /array22/vol4/home/ to /dev/rmt/5mn or /dev/st0 in encrypted mode?
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Linux Disable USB Devices (Disable loading of USB Storage Driver)

In our research lab I'd like to disable all USB devices connected to our HP Red Hat Linux based workstations. I'd like to disable USB flash or hard drives, which users can use with physical access to a system to quickly copy sensitive data from it. How do I disable USB device support under RHEL 5.x workstation operating systems?
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