This Magento 2 extension allows to configure CMS pages individually to be only visible to certain customer groups, all customer groups or all site visitors (including not logged in users). In case a visitor does not belong to any allowed customer group, they will be redirected to the customer area, or to the login page, if they are not already logged in.
$ composer require redirectpageifcustomernotloggedin
$ bin/magento module:enable redirectpageifcustomernotloggedin
$ bin/magento setup:upgrade
$ bin/magento setup:di:compile
$ bin/magento cache:cleanCMS pages can be protected by selecting one ore more customer group allowed to see a page via the Magento backend in "Content/Pages/Edit", under the "Restrict Page" tab. If no settings are applied to a page it will be visible to all logged in customers, as well as not logged in users. The extension can be enabled/disabled via "Sitewards/Redirect Page if Customer Not Logged In" tab in "Stores/Configuration". By default the extension will be enabled.