About

“One of the best technical writers in the networking and security environments.” – Midwest Book Review

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.

To get notified when a new book comes out, sign up for my fiction and nonfiction mailing lists.

I live by Detroit, am happily married, practice martial arts, and have pet rats.

Questions? Check my FAQ. Or read the autobiography pages, where I surrender my dignity. Repeatedly. Fortunately, dignity is a renewable resource.

I update this page after book releases. Want updates? Check my blog. Want really frequent and trivial updates? Check Twitter. Or look at my contact page.

PAM Mastery

PAM Mastery

FreeBSD Mastery: Advanced ZFS

FreeBSD Mastery: Advanced ZFS

freebsd mastery: specialty filesystems

FreeBSD Mastery: Specialty Filesystems

FreeBSD Mastery: ZFS

FreeBSD Mastery: ZFS

Tarsnap Mastery

Tarsnap Mastery

Networking for Systems Administrators

Networking for Systems Administrators

FreeBSD Mastery: Storage Essentials

FreeBSD Mastery: Storage Essentials

Sudo Mastery

Sudo Mastery

DNSSEC Mastery

SSH Mastery

Network Flow Analysis

Network Flow Analysis

Absolute OpenBSD 2/e

Absolute OpenBSD 2/e

Cisco Routers for the Desperate

Cisco Routers for the Desperate

Absolute FreeBSD

Absolute FreeBSD

PGP & GPG

PGP & GPG