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Remove WordPress X-Pingback header - IT Beginner

    https://itbeginner.net/remove-wordpress-x-pingback-header.html
    First you will need to login into your WordPress Admin Panel, then “Appearance”, and “Editor”. click on Theme Functions or functions.php file. Add this code to the end of functions.php file. function remove_x_pingback ($ headers) { unset ($ headers ['X-Pingback']); return $ headers;} add_filter ('wp_headers', 'remove_x_pingback');

#14971 (X-Pingback header set when no ... - WordPress Trac

    https://core.trac.wordpress.org/ticket/14971
    Also, the X-Pingback header is only one way of providing server auto-discovery; the other is the <link> HTML head element, which is baked into many WP themes. HTML and XHTML documents MAY include a <link> element in addition to an HTTP header, although this is discouraged. The spec discourages use of both the HTTP header and link rel=pingback.

X-pingback header should be generated the ... - WordPress Trac

    https://core.trac.wordpress.org/ticket/34633
    Pings/Trackbacks: Add filter argument to fetching of pingbacks_url in X-pingback header. It is possible to delegate pingback processing to a service function outside of WordPress itself. All other calls in default themes (and likely other themes) uses bloginfo which automatically adds the filter argument of "display". This adds consistency.

WordPress Pingback Attack A10 Networks

    https://www.a10networks.com/blog/wordpress-pingback-attack/
    Furthermore WordPress inserts a header. This is the “X-Pingback-Forwarded-For”. This header reveals the true identity of the attacker. If a larger number of requests originated by the same IP address, this would also be a good reason to have those requests rejected. Useful headers: X-Pingback-Forwarded-For and User-agent. Tools

plugins - X-Pingback and XMLRPC - WordPress Development ...

    https://wordpress.stackexchange.com/questions/76088/x-pingback-and-xmlrpc
    Unfortunately even when pingback and trackbacks are disabled the HTTP header is being sent. If you want to disable it, add the following code to your theme functions.php (taken from here) function remove_x_pingback($headers) { unset($headers['X-Pingback']); return $headers; } add_filter('wp_headers', 'remove_x_pingback');

X-Pingback header sent despite disabled ... - WordPress Trac

    https://core.trac.wordpress.org/ticket/7324
    Despite this, my WP 2.6 will send the following header (shortened the irrelevant data). Notice the X-pingback: HTTP/1.1 200 OK Date: ... Server: ... X-Pingback: http://www.mysite.example/xmlrpc.php Content-Type: ... After grep-ing my wordpress folder I found that this header is sent in the function WP->send_headers() in classes.php line 190.

Modifying HTTP response headers in WordPress

    https://stackoverflow.com/questions/36472360/modifying-http-response-headers-in-wordpress
    /* Remove X-Pingback in the HTTP header */ add_filter('wp_headers', function($headers) { unset($headers['X-Pingback']); return $headers; }); and this (solution of AITpro) works for me too to remove the link to Rest API in the HTTP header: /* Remove link to Rest API in the HTTP header */

#20226 (Don't advertise pingback URL on ... - WordPress Trac

    https://core.trac.wordpress.org/ticket/20226
    Currently, WordPress indiscriminately adds an X-Pingback header to all responses. Similarly all the bundled themes add link rel="pingback" to all pages. The purpose of X-Pingback and link rel="pingback" is to advertise that the current resource supports pingbacks and …

What is a Pingback in WordPress?

    https://www.wpbeginner.com/glossary/pingback/
    By checking “attempt to notify any blogs linked to from the article” WordPress will notify other blog owners when you link to them. In other words it will send them a pingback. If you check the box labeled “allow link notifications from other blogs (pingbacks and trackbacks.)” then you will receive trackbacks when other authors linking to your content.
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