Configure a Password Complexity Policy

30 minutes
  • 2 Learning Objectives

About this Hands-on Lab

In this lab, we will create a password complexity policy that will require users to enter a password that meets our defined password requirements when creating a new password. Password policies help us guarantee passwords used on our systems are secure passwords.

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Configure a Password Complexity Policy
  1. To create the password requirements in the policy, we need to edit the /etc/security/pwquality.conf file and include the following:

    minlen = 12  
    maxrepeat = 2  
    minclass = 4  
    ucredit = -3  
    dcredit = -3  
    badword = password, pass, word  
Put the Password Complexity Policy into Effect
  1. In order to put the new policy into effect, we need to add the following line to the /etc/pam.d/passwd file:

    password    required    pam_pwquality.so retry=3
    • This line should be inserted as the first line with the word "password", the third uncommented line in the default configuration of the file.

Additional Resources

In order to increase security on a new server, your supervisor has asked you to set up a password complexity policy on a new Red Hat server with the following requirements:

  • The password must be 12 characters in length.
  • The password must not repeat the same character more than two times.
  • The password must contain characters from four classes
  • The password must contain 3 upper case letters
  • The password must contain 3 digits
  • Forbid words “password, pass, word”

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