Weston Ruter

This plugin is developed at <a href="http://www.shepherd-interactive.com/" title="Shepherd Interactive specializes in web design and development in Portland, Oregon" rel="nofollow ugc">Shepherd Interactive</a> 
for the benefit of the community. No support is available. Please post any questions to the <a href="https://wordpress.org/tags/private-page-forbidden?forum_id=10" rel="ugc">support forum</a>.
Instead of serving a 404 Not Found error with the <code>404.php</code> template, send a 403 Forbidden error and set <code>$wp_query->is_403</code> and load 403.php if it exists.
Provides a filter <code>forbidden_redirect</code> which if results in a non-empty filtered value will result in the user being redirected if attempting to visit a forbidden page; the default value is <code>""</code> (no redirect).
Useful with a filter which selectively prevents a private post from being forbidden, so that the page will not show up in the navigation and won’t be included in XML Sitemaps, for example.
<pre>function my_filter_private_posts($posts){ if(is_singular() && $posts[0]->post_status == 'private' && #Now optionally allow/disallow based on user session: in_array($_SERVER['REQUEST_URI'], (array)@$_SESSION['allowed_private_uris'])) ){ header('Cache-Control: private'); #Prevent proxies from caching this private page $posts[0]->post_status = 'publish'; } return $posts; } add_filter('posts_results', 'my_filter_private_posts');</pre>

Private Page Forbidden

Instead of serving a 404 Not Found error with the 404.php template, send a 403 Forbidden error and set $wp_query->is_403 and load 403.

Presslabs

Site protection plugin for dev instances to avoid indexing by search engines. Doesn’t allow access to the site without being logged-in.
After you activate this plugin the site will return a 403 Forbidden HTTP status code if you are not logged-in.

Site Protection

Site protection plugin for dev instances to avoid indexing by search engines. Doesn't allow access to the site without being logged-in.

Private Page Forbidden vs Site Protection