def main():
    authorizer = DummyAuthorizer()
    authorizer.add_user('user', '12345', '.', perm='elradfmw')
    authorizer.add_anonymous('.')
    handler = AntiFloodHandler
    handler.authorizer = authorizer
    ftpd = FTPServer(('', 21), handler)
    ftpd.serve_forever(timeout=1)