Hence, you should not include the aforementioned details in your passwords. An attacker might try to guess the password from these details. Facebook) and professional networks (E.g. You might have added some of your personal and most of your educational and professional details in social (E.g. More importantly, never ever use your real name, parents/spouse/kids name, school/college name, or your date of birth in your password. The another important point to remember while choosing a password is to avoid commonly used passwords. In fact, a longer password, even consisting of simpler words or constructs, is much better than a short password with special characters.
Passwords that are too short prone to brute force attacks as well as to dictionary attacks using words and commonly chosen passwords. The longer the password, the longer it will take to crack. Password length has been found to be a primary factor in characterizing password strength.
I strongly advice you not to go below this limit. In most environments, the recommended password length is 8 characters.Īn eight-character password is recommended because it's long enough to provide adequate security and still short enough for users to easily remember. In this guide, we will learn how to implement some important Linux password policies using Pluggable Authentication Method, shortly known as PAM, in order to strengthen your Linux system's security.īefore getting into the topic, I'd like to list a few important key elements to remember before setting up the password policies. Because, so many system breaches are happened due to weak passwords. As a System administrator, you must set a strong password for the users and enforce a strong password policy.
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