How to limit display of iframe from an external site to specific domains only

Question

I operate a service where a client\'s content is prepared and displayed in an iframe. The client then copies a rudimentary iframe html tag and pastes it into their web page.

Answer 1

you can use an .htaccess (assuming the original content is on an Apache server) to limit the access to a specific IP.

Or, if the page is a PHP, you could limit it to a specific domain, like this: