--- system.module
+++ (clipboard)
@@ -318,6 +318,14 @@
     'access arguments' => array('administer site configuration'),
     'file' => 'system.admin.inc',
   );
+  $items['admin/settings/proxy'] = array(
+    'title' => 'Proxy Server',
+    'description' => 'Configure settings when the site is behind a proxy server.',
+    'page callback' => 'drupal_get_form',
+    'page arguments' => array('system_proxy_settings'),
+    'access arguments' => array('administer site configuration'),
+    'file' => 'system.admin.inc',
+  );
   $items['admin/build/modules/list'] = array(
     'title' => 'List',
     'type' => MENU_DEFAULT_LOCAL_TASK,