Whoops. Reverting accidental reversion.

sites/default/default.settings.php

@@ -513,6 +513,24 @@
  */
 # drupal_fast_404();
 
+/**
+ * External access proxy settings:
+ *
+ * If your site must access the Internet via a web proxy then you can enter
+ * the proxy settings here. Currently only basic authentication is supported
+ * by using the username and password variables. The proxy_user_agent variable
+ * can be set to NULL for proxies that require no User-Agent header or to a
+ * non-empty string for proxies that limit requests to a specific agent. The
+ * proxy_exceptions variable is an array of host names to be accessed directly,
+ * not via proxy.
+ */
+# $conf['proxy_server'] = '';
+# $conf['proxy_port'] = 8080;
+# $conf['proxy_username'] = '';
+# $conf['proxy_password'] = '';
+# $conf['proxy_user_agent'] = '';
+# $conf['proxy_exceptions'] = array('127.0.0.1', 'localhost');
+
 /**
  * Authorized file system operations:
  *