Need to make sure that a site is private for all but the administrators? Just activate this plugin.
There are no settings, no configuration - it just forces anyone that isn't an admin to go to the login page. They won't see anything of the site at all. Great for hiding sites really quickly.
It's recommended that you install this plugin by searching for it in your WordPress Dashboard.
- Go to Plugins > Add New
- Search for "Simple Site Lockdown"
- The first result should be this plugin, check the author is 'philipjohn' to double check
- Click Install Now
- Click Activate Plugin
Installing any other way carries the risk that it's from a source which could have injected malicious software into the plugin.