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Labs

Examine Log Files and Remove Traces of Your Presence

The goal of this lab is to find traces of your presence in the system logs and remove them.

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Labs

Path Info

Level
Clock icon Intermediate
Duration
Clock icon 30m
Published
Clock icon Sep 25, 2018

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Table of Contents

  1. Challenge

    Find your public IP address.

  2. Challenge

    Become `root`.

    Run the following command: sudo -i

  3. Challenge

    Open the `/var/log/secure` log file.

    Run the following command: vim /var/log/secure

  4. Challenge

    Find all entries containing your IP address.

    Run the following command: /<IP ADDRESS>

  5. Challenge

    Remove all traces of your presence.

    1. Press i to edit the log file.
    2. Delete all entries containing your IP address.
  6. Challenge

    Save the changes and close the log file.

    Run :wq in vim.

  7. Challenge

    Log out.

    Run the following command: exit

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