Limit the iframe display from an external site to specific domains with these easy steps

My service involves preparing and displaying a client's content within an iframe. However, some clients have raised concerns about the possibility of other websites copying the iframe tag and using it on their own sites.

Is there a way to restrict the display of content within an iframe to specific domains? For example, can we programmatically inform the iframe that its parent must be from a certain domain like some-domain.com in order for the content to be displayed?

Does this idea seem feasible or am I over-explaining things as usual?

javascriptiframe

Answer №1

If you need to restrict access to a specific IP address, you can utilize an .htaccess file (assuming your content is hosted on an Apache server).

Alternatively, if the page is written in PHP, you could limit access based on a specific domain by using the following code:

<?php
$continue = 0;
if(isset($_SERVER['HTTP_REFERER'])) {

    //Ensure it is coming from the correct domain:
    $ar=parse_url($_SERVER['HTTP_REFERER']);
    if( strpos($ar['host'], 'yourdomain.com') === false ){
    } else {
        $continue = 1;
    }

}

if($continue == 0){
    header('HTTP/1.0 403 Forbidden');
    exit('Forbidden');
}

?>

Answer №2

It seems like a server-side validation would be more secure in this case - you could compare the iFrame markup to a whitelist of approved domain names or parent domains and reject it if they don't match.

You have the option of doing all of this in JavaScript before inserting the iFrame onto the page, but keep in mind that if JavaScript is disabled, your validation process won't work. Additionally, with client-side development tools, it's possible for users to manipulate any JavaScript code.

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