Additionally, they are strong passwords because they include a mix of lowercase, uppercase, and numeric characters. In fact, APG includes the pronunciation in parentheses () to the right of each password. They are referred to as "pronounceable" because the passwords may actually be pronounced like regular words. The default behavior of APG installed on Ubuntu via apt-get when executed, is to prompt for random data from standard input (typically the keyboard) and upon pressing enter, display six (6) strong "pronounceable" passwords. You are now ready to begin using, and further configuring APG to your liking. After authentication, the APG package will be downloaded, and installed. The password being requested is your user password, or the same password you use when issuing commands with the sudo command. To install APG, ensure you have enabled the Universe Packages, (see UniversePackages) and have a live connection to the Internet, then issue the following command at a command prompt: It should be noted here that Ubuntu's password functions for user accounts do provide some means of enforcing strong passwords for user accounts, but there are cases, and applications where the strength of the password cannot be enforced in this manner, and so this guide exists to help the user generate acceptable strong passwords. (see the Resources section of this guide) If you wish to study APG further, you may find all information at the APG website. Not only does APG generate passwords, it will generate strong passwords for you as well. APG does precisely what its name implies: it automatically generates passwords. How do we have our computers help generate strong passwords automatically? This section will cover the Automatic Password Generator application (APG) which is available in Ubuntu via System Administration (universe). Now that we've establish what constitutes a strong password. Should contain three (3) of the following character types.Is significantly different from your previous password.Does not contain a complete dictionary word.Does not contain your user name, real name, organization name, family member's names or names of your pets.At least fifteen (15) characters in length.A strong password is defined as any password which meets the following criteria: This guide is for anyone with sufficient experience with the GNU/Linux command-line, including installing packages using apt-get, and executing command-line tools who also has an interest in passwords, and generating strong passwords with a command-line utility.Īpplications, and libraries exist for your Ubuntu system to assist in generating, or enforcing strong passwords. Such principles are beyond the scope of this guide, and the reader is requested to see the resources presented at the end of this guide for further information on passwords, and formal password policies. This guide does not recommend a formal password policy, including rotation/change scheduling, re-use prevention strategies, and the like. This guide demonstrates the generation of strong passwords with applications available to Ubuntu. If the password you choose is based on common information such as a dictionary word, an attacker may use a so-called "brute-force" method of determining your password, and subsequently compromise the account, or data protected with that password. Choosing a strong password for any application, or service which may require one is extremely important. Passwords are the most commonly used security tactic in computing, and are frequently used to protect sensitive information, such as your e-mail account, or your Ubuntu user account. Many security mechanisms present in Ubuntu and elsewhere require a password. 4 Generating Strong Passwords in Ubuntu.
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