Textbook uses terminology like Double/Single Bastion Inline/T to describe firewall architectures. Are these terms used in professional environments?
I apologize for the weird wording of the question title, I was hitting the character count.
I am taking a network security course in college and the textbook we use, Network Security Essentials: Applications and Standards 6th Edition by William Stallings, dives into firewalls in chapter 12. The book defines 6 firewall deployment architectures: host-resident, screening router, single bastion inline, single bastion T, double bastion inline, double bastion T, and distributed firewall.
I am doing a bit of research for a project and the only places I've been able to find the terms single/double bastion inline/T are on websites referring to the book or places that define the terms and don't give anything other than a definition. I've had trouble finding any more information about these architectures. I've found terms like screening host, multi-homed host, and others but I'm having trouble connecting them to the things discussed in the book.
Are there other terms used to describe these firewall layouts? If not, what terms are used and how do they relate to the ones discussed in the textbook?
I've included a picture that does a decent job of showing what the book describes below.
