Plesk has the built-in feature to password-protect directories.
It is assumed that you are using Plesk as a Service Provider. If you are using Plesk as a Power User, switch to Service Provider:
- Go to the 'Server' tab
- Go to 'Interface Management'
- Go to 'Panel Appearance'
- Click 'Service Provider'
- Click 'OK'
- You will now be in Service Provider mode
To password-protect a directory:
- Click 'Domains'
- Click 'Control Panel' for the domain you want to set up a password-protected directory in
- Click 'Websites & Domains'
- Click 'Show Advanced Operations'
- Click 'Password-Protected Directories'
- Click 'Add Protected Directory'
- Enter the name, location and title of the directory you want to protect
- Click 'OK'
- Click on the folder
- Click 'Add New User'
- Enter in the username for the user
- Enter in the password
- Enter in the password again
- Click 'OK'
- The directory is now password-protected