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Disk Encryption with eCryptfs

Disk and filesystem encryption are important security measures for working with sensitive data. The eCryptfs software package provides data encryption at the filesystem level for targeted data encryption. A thorough understanding of how to create and work with encrypted disks and filesystems is required for advanced security certification exams such as the LPIC 303-200 exam.

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Path Info

Clock icon Intermediate
Clock icon 30m
Clock icon Nov 05, 2018

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Table of Contents

  1. Challenge

    Install eCryptfs on the Provided System

    1. Run the following command:
    sudo apt-get install ecryptfs-utils
    1. Accept the defaults at the prompts.
  2. Challenge

    Configure `/opt/protected` as an Encrypted Mount

    1. Run the following command:
    sudo mount -t ecryptfs /opt/protected /opt/protected
    1. Type supersecret! at the passphrase prompt.
    2. Accept all default options at the configuration prompts.
    3. Answer "yes" to all prompts.
  3. Challenge

    Copy the Contents of `/etc/profile.d` into `/opt/protected`

    1. Run the following command:
    sudo cp /etc/profile.d/* /opt/protected/
  4. Challenge

    Re-encrypt `/opt/protected` and Verify that the Contents of the Directory Are Unreadable

    1. Run the following command:
    umount /opt/protected
    1. Attempt to view the contents of one of the files in the /opt/protected directory using the cat command.

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