Other Linux commands use OpenSSL, dd, and date to generate passwords, but urandom pwgen is my preferred method. This tutorial shows how to install pwgen on Ubuntu 20.04. This tool is designed for generating secure passwords which can be easily memorized by humans. This is why a strong password is essential. The pwgen is a tool that enables to generate random passwords via command line. It would take trillions of years to crack your password using these methods. Now in the future, type the following to generate a secure password: spw Save and restart the server, or even better, reload bash using: source ~/.bash_profile Making this into a simple easy to remember commandĪdd this line: spw() Left-hand only urandom < /dev/urandom tr -dc | head -c16 echo Right-hand only urandom < /dev/urandom tr -dc '67890^*_+-= .?yuiopYUIOPhjklHJKLbnmBNM' | head -c16 echo Recommended urandom < /dev/urandom tr -dc '' | head -c16 echo Here’s the previous method from the original article… Use the urandom command to generate secure passwords Thus, pass is also a command-line password manager. These encrypted files may be organized into meaningful folder hierarchies, copied from computer to computer, and, in general, manipulated using standard command-line file management utilities. With pass, each password lives inside a gpg encrypted file whose filename is the title of the website or resource that requires the password. Using ‘pass’ to generate a secure password Need fewer generated passwords? Use pwgen -sync 16 1 where 1 = the number of password results. c, –capitalize: Include at least one capital letter in the password. n, –numerals: Include at least one number in the password. y, –symbols: Include at least one special character in the password. s, –secure: Generate completely random, hard-to-memorize passwords. Once installed, here’s an explanation of the command I’m using above. On most Linux distros, you can install pwgen using the systems package manager. Install pwgen on your Linux distribution Choose your Linux distribution to get detailed installation instructions. The command I use is: pwgen -y 32Įven more secure and easy to remember using the word ‘sync’: pwgen -sync 16 Here’s my go-to command-line method for secure password generation. Using pwgen to generate a secure password Include letters (mixed case), numbers, and special characters.Passwords should be at LEAST 10 16 characters in length.If MySQL is on the same server, connect via sockets.įor selecting secure passwords, here’s what is recommended: If you are serious about security, these should not be accessible via a remote password login.įor SSH, you should already use authentication keys and set PasswordAuthentication no in your SSHD config file.įor MySQL, you should use skip-networking bind-address = 127.0.0.1 and iptables to block port 3306 or restrict access to specific IP(s). Notice that I didn’t include SSH or MySQL root passwords above. pwgen(1): make pronounceable passwords - Linux man page The pwgen program generates passwords which are designed to be easily memorized by humans, while being as secure as possible. Many practices make a server secure, but often neglected is using secure passwords.
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