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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, would like to disable all USB devices connected to our HP Red Hat Linux based workstations. I would 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 CentOS Linux, RHEL version 5.x/6.x/7.x and Fedora latest version?
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