apache - basic auth - proxy

<VirtualHost *:80>
    ServerAdmin info@xxxxxx
    ServerName xxx.xxx.com
    DocumentRoot /var/www/html/xxx.xxxx.com
    ServerAlias xxxx.xxx.com
    DocumentRoot /var/www/html/xxx.xxxx.com

    ProxyPreserveHost On
    ProxyRequests Off
    ProxyPass /  http://xx.x.xxx.xxx:xxxx/
    ProxyPassReverse /  http://xx.x.xxx.xxx:xxxx/

    <Proxy *>
        Order deny,allow
        Allow from all
    </Proxy>

<Location />
  AuthType Basic
  AuthName "Attention"
  AuthBasicProvider file
  AuthUserFile "/var/www/.htpasswd"
  Require valid-user
</Location>

    ErrorLog /var/log/apache2/xxxx.xxxxxx.com-error.log
    LogLevel error
    CustomLog /var/log/apache2/xxxx.xxxxx.com-access.log combined
</VirtualHost>