"This book is for everyone who uses PF. Regardless of operating system and skill level, this book will teach you something new and interesting."
—BSD Magazine (Read More)

"This book is a super-easy read. I loved it! This book easily makes my Top 5 Book list"
—Chris Silva, Daemon News (Read More)

"Are you considering moving your setup to PF from some other system? If you are, then this book is for you. Author Peter Hansteen, has done an outstanding job of writing a book that is intended to be a stand-alone document to enable you to work on your machines."
—John Vacca, author and IT consultant (Read More)

"With Mr. Hansteen paying close attention to important topics like: state inspection, SPAM, black/grey listing, and many others; this must have reference for BSD users can go a long way to helping you fine tune the who/what/where/when/how of access control on your BSD box."
—InfoWorld (Read More)

"All in all, this book is very readable and a must-have resource for anyone who deals with firewall configurations. If you've heard good things about PF and have been thinking of giving it a go, this book is definitely for you. Start at the beginning and before you know it you'll be through the book and quite the PF guru. Even if you're already a PF guru, this is still a good book to keep on the shelf to refer to in thorny situations or to lend to colleagues."
—Dru Lavigne, tech writer (Read More)

"On the whole, the book is a great resource and has me eager to rewrite my aging rulesets."
—;login (Read More)