diff --git a/RSS.i18n.php b/RSS.i18n.php
index acdee5a..f0bc817 100644
--- a/RSS.i18n.php
+++ b/RSS.i18n.php
@@ -19,6 +19,7 @@ $messages['en'] = array(
 	'rss-invalid-url' => 'Not a valid URL: $1',
 	'rss-parse-error' => 'Error parsing XML for RSS',
 	'rss-ns-permission' => 'RSS is not allowed in this namespace',
+	'rss-url-permission' => 'This URL is not allowed to be included',
 	'rss-item' => '{{$1 | title = {{{title}}} | link = {{{link}}} | date = {{{date}}} | author = {{{author}}} }}',
 );
 
diff --git a/RSS.php b/RSS.php
index 8d399dc..74309e2 100644
--- a/RSS.php
+++ b/RSS.php
@@ -59,8 +59,10 @@ $wgRSSNamespaces = null;    // Ignore the RSS tag in all but the namespaces list
 						    // null (the default) means the <rss> tag can be used
 						    // anywhere.
 
+$wgRSSAllowedFeeds = array();
+
 // Agent to use for fetching feeds
 $wgRSSUserAgent = 'MediaWikiRSS/0.02 (+http://www.mediawiki.org/wiki/Extension:RSS) / MediaWiki RSS extension';
 
 // Proxy server to use for fetching feeds
-$wgRSSProxy = false;
\ No newline at end of file
+$wgRSSProxy = false;
diff --git a/RSSHooks.php b/RSSHooks.php
index 3c00035..c57c495 100644
--- a/RSSHooks.php
+++ b/RSSHooks.php
@@ -20,7 +20,7 @@ class RSSHooks {
 	 * @param $frame Frame parser context
 	 */
 	static function renderRss( $input, $args, $parser, $frame ) {
-		global $wgRSSCacheAge, $wgRSSCacheCompare, $wgRSSNamespaces;
+		global $wgRSSCacheAge, $wgRSSCacheCompare, $wgRSSNamespaces, $wgRSSAllowedFeeds;
 
 		if ( is_array( $wgRSSNamespaces ) && count( $wgRSSNamespaces ) ) {
 			$ns = $parser->getTitle()->getNamespace();
@@ -31,6 +31,10 @@ class RSSHooks {
 			}
 		}
 
+		if ( count( $wgRSSAllowedFeeds ) && !in_array( $input, $wgRSSAllowedFeeds ) ) {
+			return wfMsg( 'rss-url-permission ' );
+		}
+
 		if ( !Http::isValidURI( $input ) ) {
 			return wfMsg( 'rss-invalid-url', htmlspecialchars( $input ) );
 		}