1. Create user & password hash file with bcrypt encryption for passwords.
htpasswd -B -c /etc/apache2/.htpasswd demo-user New password: Re-type new password: Adding password for user demo-user
2. Add additional user to existing file.
htpasswd -B /etc/apache2/.htpasswd demo-user2 New password: Re-type new password: Adding password for user demo-user2
3. Enable Basic Authentication in Apache2 conf file.
<Directory /var/www/html/example.org/> AuthType Basic AuthName "Basic Authentication" AuthUserFile /etc/apache2/.htpasswd Require valid-user </Directory>