MediaWiki

Désactiver nofollow (pourquoi):

$wgNoFollowLinks = false;

Extension ConfirmEdit:

require_once "$IP/extensions/ConfirmEdit/ConfirmEdit.php";
# Defaut configuration:
#$wgGroupPermissions['*'            ]['skipcaptcha'] = false;
#$wgGroupPermissions['user'         ]['skipcaptcha'] = false;
#$wgGroupPermissions['autoconfirmed']['skipcaptcha'] = false;
#$wgGroupPermissions['bot'          ]['skipcaptcha'] = true; // registered bots
#$wgGroupPermissions['sysop'        ]['skipcaptcha'] = true;
#$wgAvailableRights[] = 'skipcaptcha';
#$wgCaptchaTriggers['edit']          = false; // Would check on every edit
#$wgCaptchaTriggers['create']           = false; // Check on page creation.
#$wgCaptchaTriggers['addurl']        = true;  // Check on edits that add URLs
#$wgCaptchaTriggers['createaccount'] = true;  // Special:Userlogin&type=signup
#$wgCaptchaTriggers['badlogin']      = true;  // Special:Userlogin after failure
#$wgCaptchaClass = 'SimpleCaptcha';
require_once "$IP/extensions/ConfirmEdit/QuestyCaptcha.php";
$wgCaptchaClass = 'QuestyCaptcha';
$wgCaptchaQuestions[] = array( 'question' => "Le mot magique?", 'answer' => "S'il te plaît" );
$wgCaptchaQuestions[] = array( 'question' => "Année de couronnement de Charlemagne?", 'answer' => "800" );

Empêcher la création de compte et les modifications anonymes (doc):

$wgGroupPermissions['*']['createaccount'] = false;
$wgGroupPermissions['*']['edit'] = false;

Puis modifier MediaWiki:Loginprompt, dont le texte est recopié dans l'écran de connexion.