Set Security Level

I want to set Security: Log in to the page to "Log in to the site (site.login)" for each page created for the site.

They are able to do this for each individual page via the admin plugin.

Is there a way to set this behavior in one place and have all the pages created "protected" without doing it for every single page?

Thanks

Did you check root page permissions? Or that did not help?

Yes I have set the root page permission but the childs page are not "protected".