> and the security of the system relied upon the firewall between the different front-ends I really don't think there's anything to conclude from the "firewall

> and the security of the system relied upon the firewall between the different front-ends I really don't think there's anything to conclude from the "firewall" comment. This term has become a layman way of describing any kind of intended separation between computer systems. People know what firewalls are and so it becomes an overused analogy. It's like how passwords are described as being "encrypted" in layman media.