How to prevent a site from opening on all domains except site.com?

Question

htaccess

Set up default VirtualHost in apache to your domain.
> But, unknown people created a domain and tied it to the ip of my server and my site began to appear on their domain.
How can I prevent the site from opening on all domains except mine?

<VirtualHost 123.123.123.123:80>
  ServerName www.site.com
    ServerAlias site.com

  ServerAdmin [email protected]
  DocumentRoot /var/www
  
  ErrorLog ${APACHE_LOG_DIR}/error.log
  CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

Answer 1

More or less like this:

RewriteEngine On
RewriteCond %{HTTP_HOST}  !^www\.site\.com$ [nocase]
RewriteRule ^(.*)$        http://www.site.com$1 [last,redirect=301]

But if they change the name of the site when proxying on the fly, then this method will not help.
You need to look at what IP they are accessing from and block it.
But if they access through anonymous proxies, then this method will not help either.
It also makes sense to see which User-Agent and Referer are used in their requests.