Disk Encryption with eCryptfs

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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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Lab Info

Level

Intermediate

Last updated

Sep 21, 2025

Duration

30m

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.
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.
Challenge

Copy the Contents of `/etc/profile.d` into `/opt/protected`
1. Run the following command:
```
sudo cp /etc/profile.d/* /opt/protected/
```
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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