The Book of PF: A No-nonsense Guide to the Openbsd Firewall

This book doesn't really concern itself with the installation of OpenBSD or various other configuration aspects, just PF. It's straight and to the point. This book isn't a howto or hand holding example, it requires you to understand and review the material instead of dumping someone elses config on your systems and expecting it to work.Other than the OpenBSD FAQ's themselves, this is a nice compliment and addition with plenty of good information. There is good information on turning away brute force attacks and about ALTQ that I found were lacking on the OpenBSD site - as thorough as it usually is.If you set up OpenBSD firewalls, want to try to set them up or have any need whatsoever to use PF in in y our environment this is certainly a good manual to have close by that will certainly give you insight in those couple of little things the FAQs do not. I find myself always looking at it when making config changes.

I was surprised that this book didn't cover the basics of pf. The reserved words, configuration syntax, statement order are not covered. Someone new to pf is not served well by this book. I recommend reading the pfctl and pf.conf man pages for the basics. You can pick up the rest of the info you need from the web. This book is a poor value.

Like all 'No Starch' books, this one delivers. Well organized and to the point. If you have computer security concerns, using a BSD OS and setting up PF is the way to go

The only best PF book I have read so far

There are plenty of resources on the web that you can piece together to get PF functional. What I found difficult was to get a broader overview of PF with the implementation details, which is what this book does. I highly recommend it.

even if you don't work with pf, you need to read at least once this book, that will teach you how a "real" packet filter works.