I’ve been publishing books since the early 1990s.
My newest nonfiction includes Networking for Systems Administrators, FreeBSD Mastery: Storage Essentials, Sudo Mastery, and Absolute OpenBSD, 2nd Edition. You also need my earlier books, like SSH Mastery, DNSSec Mastery, and Network Flow Analysis.
I also write fiction. That’s another site.
I live by Detroit, am happily married, practice martial arts, and have pet rats.