: Wordpress Multisite- How to restrict a non-wordpress page only to one domain I am running three blogs from a wordpress multisite. Currently, I am developing a separate, non wordpress application.

@Ann8826881

You can use your .htaccess to only allow access from the domain you want.

RewriteCond %{HTTP_HOST} !^www.yourblog.com [NC]
RewriteRule ^directoryname/ - [F]


First line checks if the incoming host header doesn't match your allowed host. If it doesn't then the second line will catch the request.

The second line forbids requests to your app's directory.

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@Jennifer507

if you want to discourage search engine to crawl your app

use robots.txt
block your app folder

User-agent: *
Disallow: /my-app/

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@Si4351233

WordPress multisite uses wild card sub-domains. The problem is your application isn't integrated with WorPress. So anyone accessing the ~/my-app/ folder will see it's contents, and WordPress isn't going to stop them simply because it's a sub-folder in your WordPress installation. Restricting access to only blog1 you'll need to

Your application should use require('wp-blog-header.php'); in it's header. This will allow you to use WordPress functions within the application. You can then write a conditional in the header to restrict access to only blog1. This isn't tested so i'm not 100% sure if it would work. When the page blog1-domain/my-app/ loads it might recognize that as part of blog1. If someone goes to blog2-domain/my-app/ it might recognize it as blog2 and restrict access. You can test the code below or simply try echoing the blog ID in your app, and access it from different blogs to see if it's picking up each blog ID. If so you can restrict access with the code below.

<?php
global $blog_id;

if ($blog_id == 1) {
code here;
}

elseif ($blog_id == 2) {
and here;
}

else {
and default here;
}
?>

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