[CentOS] C7 minimal (1511) firewalld is not installed: logical?

I just installed a host with CentOS-7-x86_64-Minimal-1511.iso

It seems that firewalld is not included in the minimal set. I wonder why?

If I recall correctly CentOS-7-x86_64-Minimal-1503-01.iso did include it.

And, this could be a very stupid question, am I running without a firewall or just without a way to control my firewall?

Thanks
Patrick