“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

“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

“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

“The book is a great resource and has me eager to rewrite my aging rulesets.”

—;login:

“This book is a super-easy read. I loved it! This book easily makes my Top 5 Book list.”

—Daemon News