如何禁用“洪水尝试IP阻止”功能？

当用户多次尝试登录时，Drupal会阻止用于访问站点的IP。

如何禁用此功能？

您可以做的是在settings.php文件中添加以下代码。

$conf['user_failed_login_ip_limit'] = PHP_INT_MAX;

这样，IP将不会被阻止。

user_login_authenticate_validate（）包含以下代码。

  if (!empty($form_state['values']['name']) && !empty($password)) {
    // Do not allow any login from the current user's IP if the limit has been
    // reached. Default is 50 failed attempts allowed in one hour. This is
    // independent of the per-user limit to catch attempts from one IP to log
    // in to many different user accounts.  We have a reasonably high limit
    // since there may be only one apparent IP for all users at an institution.
    if (!flood_is_allowed('failed_login_attempt_ip', variable_get('user_failed_login_ip_limit', 50), variable_get('user_failed_login_ip_window', 3600))) {
      $form_state['flood_control_triggered'] = 'ip';
      return;
    }
    $account = db_query("SELECT * FROM {users} WHERE name = :name AND status = 1", array(':name' => $form_state['values']['name']))->fetchObject();
    if ($account) {
      if (variable_get('user_failed_login_identifier_uid_only', FALSE)) {
        // Register flood events based on the uid only, so they apply for any
        // IP address. This is the most secure option.
        $identifier = $account->uid;
      }
      else {
        // The default identifier is a combination of uid and IP address. This
        // is less secure but more resistant to denial-of-service attacks that
        // could lock out all users with public user names.
        $identifier = $account->uid . '-' . ip_address();
      }
      $form_state['flood_control_user_identifier'] = $identifier;

      // Don't allow login if the limit for this user has been reached.
      // Default is to allow 5 failed attempts every 6 hours.
      if (!flood_is_allowed('failed_login_attempt_user', variable_get('user_failed_login_user_limit', 5), variable_get('user_failed_login_user_window', 21600), $identifier)) {
        $form_state['flood_control_triggered'] = 'user';
        return;
      }
    }
    // We are not limited by flood control, so try to authenticate.
    // Set $form_state['uid'] as a flag for user_login_final_validate().
    $form_state['uid'] = user_authenticate($form_state['values']['name'], $password);
  }

限制实际上有两个：一个用于Drupal始终具有IP的情况，一个用于当Drupal也具有用户ID的情况。后者是针对用户输入现有帐户的用户名的情况；在这种情况下，Drupal将注册用户ID和IP。
如果要避免这种情况，则还需要将此行添加到setting.php文件中。

$conf['user_failed_login_user_limit'] = PHP_INT_MAX;
$conf['user_failed_login_user_window'] = 5;

在防汛模块会很好地处理这一点。

在Drupal 8中，您可以在配置文件中更改洪水设置user.flood.yml。

uid_only: false
ip_limit: 50
ip_window: 3600
user_limit: 5
user_window: 21600
_core:
  default_config_hash: UYfMzeP1S8jKaaaavxf7nQNe8DsNS-3bc2WSNNXBQWs

这意味着每个IP和每个用户都有一个限制：

• 每3600秒（1小时），每个IP地址允许50次尝试
• 每21600秒（6小时），每个用户帐户允许5次尝试（非常少）

您可能会更改并导入设置（我将其设置为每5分钟100次尝试）：

uid_only: false
ip_limit: 100
ip_window: 300
user_limit: 100
user_window: 300
_core:
  default_config_hash: UYfMzeP1S8jKaaaavxf7nQNe8DsNS-3bc2WSNNXBQWs