I have installed Magento 126.96.36.199 within a subdirectory of my document root, e.g.:
In my .htaccess file found at the root folder of Magento (/estore) I have restricted access to RSS feed as follows:
RewriteRule ^(index.php/?)?rss/catalog/notifystock/? - [NC,L,R=403]
The above works for the below links:
However, the below links are not restricted:
The Base URL declared in Magento configuration at the section System -> Configuration -> Web for both Unsecure and Secure URLs is the same, as I have moved my store to full HTTPS:
I have also modified in the same way the .htaccess file under the document root, but the problem persists.