'Implements interface.'

def do_make_port_forward_command(self, service, local_port, remote_port):

    return ['ssh', '-i', self.__ssh_key_path, '-o', 'StrictHostKeyChecking=no', '-o', 'UserKnownHostsFile=/dev/null', '{user}@{ip}'.format(user=self.hal_user, ip=self.instance_ip), '-L', '{local_port}:localhost:{remote_port}'.format(local_port=local_port, remote_port=remote_port), '-N']
