Drupal - Proxy Settings

settings.php

/**
 * 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'] = 'web-proxy';
$conf['proxy_port'] = 3128;
# $conf['proxy_username'] = '';
# $conf['proxy_password'] = '';
# $conf['proxy_user_agent'] = '';
# $conf['proxy_exceptions'] = array('127.0.0.1', 'localhost');