The quick and dirty way is using wp-require-login, which can be downloaded from https://wordpress.org/plugins/wp-require-login/. Only people registered with the site can view content, which makes it ideal for intranets etc.
The quick and dirty way is using wp-require-login, which can be downloaded from https://wordpress.org/plugins/wp-require-login/. Only people registered with the site can view content, which makes it ideal for intranets etc.