/**
  * Save settings
  *
  * @access public
  * 
  */
 public function save()
 {
     // first delete old servers
     $this->settings->deleteLike('radius_server%');
     $this->settings->set('radius_active', $this->isActive() ? 1 : 0);
     $this->settings->set('radius_port', $this->getPort());
     $this->settings->set('radius_shared_secret', $this->getSecret());
     $this->settings->set('radius_name', $this->getName());
     $this->settings->set('radius_creation', $this->enabledCreation() ? 1 : 0);
     $this->settings->set('radius_migration', $this->isAccountMigrationEnabled() ? 1 : 0);
     $this->settings->set('radius_charset', $this->getCharset() ? 1 : 0);
     $counter = 0;
     foreach ($this->getServers() as $server) {
         if (++$counter == 1) {
             $this->settings->set('radius_server', trim($server));
         } else {
             $this->settings->set('radius_server' . $counter, trim($server));
         }
     }
     include_once './Services/AccessControl/classes/class.ilObjRole.php';
     ilObjRole::_resetAuthMode('radius');
     if ($this->getDefaultRole()) {
         ilObjRole::_updateAuthMode(array($this->getDefaultRole() => 'radius'));
     }
     return true;
 }