The authentication plugins operate when users login to your website front-end or administrator area.
The Joomla!® authentication plugin is in operation by default but you can enable Gmail or LDAP or install a plugin for a different system.
The authentication plugin is used to check and verify that login (username and password) credentials are correct (valid).
Default state: on
Default state: off
In Joomla version 3.10.x Plugins are managed via the administrator area menu 'Extensions' tab.