You can easily enable SSL in Joomla with below steps:
- Login to Joomla.
- Click on “Global Configuration” under “System”.
- Here you have to select “Server” tab and locate “Server Settings” section.
- Now you will find “Force SSL” option, you can find None, Administrator Only and Entire site option.
- After selecting the option Administrator Only or Entire site, click on “Save & Close”.