Faced with the problem of not working external connection to 1 of the many sites on the account on the hosting (i.e. on all the sites everything is fine, but only 1 problem).
1. When loading in the browser page-nodes (done from the admin area of Drupal CMS 7.54) with the following php code:
<strong><?php print_r(drupal_http_request('https://updates.drupal.org/')); ?></strong>
the following text is displayed:
stdClass Object ( [code] => -61 [error] => Connection refused )