WikiKCaptcha is a MediaWiki extension.

Status for Mediawiki4Intranet distribution:

Usage

Just install it along with ConfirmEdit extension and it will work out of the box.

Installation

Add the following lines into your LocalSettings.php:

require_once "$IP/extensions/ConfirmEdit/ConfirmEdit.php";
require_once "$IP/extensions/ConfirmEdit/WikiKCaptcha.class.php";
$wgCaptchaClass = 'WikiKCaptcha';

Also you can just use our Mediawiki4Intranet distribution and ExternalServerSettings.php config — it’s turned on by default there.