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Configuring PAM

PAM has become an important part of the standard Linux login and account management subsystem. Systems administrators and security engineers alike should be knowledgeable of how to configure and enable various PAM modules. In this hands-on lab, we will work with the `pam_cracklib` and `pam_tally` modules and learn how they can be used to enhance system security.

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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 `pam_cracklib`

    1. Install the necessary libraries for pam_cracklib.
    sudo apt-get install libpam-cracklib
  2. Challenge

    Configure `pam_cracklib`

    1. Edit /etc/pam.d/common-password.
    2. Change the existing pam_cracklib configuration to the following:
    password   requisite    pam_cracklib   retry=3 minlen=10
  3. Challenge

    Enable and Configure `pam_tally2`

    1. Edit /etc/pam.d/common-auth.
    2. Add a pam_tally configuration before the default block by adding the following text:
    auth     required deny=2 unlock_time=600

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