Blocking access to addon domains

I'm using cpanel to create addon domains for my account, the addon domains are开发者_JAVA百科 created so that addon.com is put in the path /home/user/public_html/addon.com/ which means I can access them via primarydomain.com/addon.com. I'd like to cut off access to these directories so people can't access them outside of their domain

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Add the following code in your .htaccess file at the root of addon.com

RewriteEngine On
RewriteCond %{HTTP_HOST} ^(.*)\.primarydomain\.com$
RewriteRule ^(.*)$ path/to/404/ErrorDoc

Alternative and far better: while creating addon.com specify the document root as outside the public_html folder. ie. /addon.com instead of /public_html/addon.com.

Hope that helps.

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use htaccess and look at hostname and redirect if it wrong