Ebook The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall

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The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall

Ebook The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall

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About the Author

Peter N. M. Hansteen is a consultant, writer, and sysadmin based in Bergen, Norway. A longtime Freenix advocate, Hansteen is a frequent lecturer on OpenBSD and FreeBSD topics, an occasional contributor to BSD Magazine, and the author of an often-slashdotted blog (http://bsdly.blogspot.com/). Hansteen was a participant in the original RFC 1149 implementation team. The Book of PF is an expanded follow-up to his very popular online PF tutorial (http://home.nuug.no/~peter/pf/).

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Product details

Paperback: 248 pages

Publisher: No Starch Press; 3 edition (October 18, 2014)

Language: English

ISBN-10: 9781593275891

ISBN-13: 978-1593275891

ASIN: 1593275897

Product Dimensions:

7 x 0.5 x 9.2 inches

Shipping Weight: 1 pounds (View shipping rates and policies)

Average Customer Review:

4.3 out of 5 stars

30 customer reviews

Amazon Best Sellers Rank:

#896,649 in Books (See Top 100 in Books)

My biggest gripe with this book is that the author assumes entirely too much knowledge from the reader. There are some topics where his explanations are simply difficult to understand. For example he often mixes OpenBSD and FreeBSD one after the other (which is good!) but without a clear line when he starts talking about both. I honestly found myself reading parts over and over so they could be understood better.He also tried to make the book concise/short by explaining things straight to the point and this is another reason why is hard to understand in some cases. He is a genius and knows his stuff very well but he needs to take some pointers from Michael W Lucas' work. Mr Hansteen reminds me of Charles Petzold's technical knowledge but 1,000% drier and more difficult to follow.Example#1: pg. 60 "The other relevant bits of /etc/pf.conf follow ....." then he starts breaking down the pf.conf file but this file is nowhere to be found. Actually it is in there, but on pg 63. This is small and doesn't take a genius to figure out but quite honestly it also doesn't take a genius to fix it. i.e. tell the reader where the file is, or even better, present the file to the reader first and then start breaking it down.Example #2: The author explains that setting up network interfaces are of little interest to us and extremely easy to do, and that's why he doesn't care to show how to do it. Same goes for setting up a DHCP server. I'm sorry Mr Hansteen, but I couldn't disagree more. Yes, setting up interfaces and a DHCP server are easy things to do but I had to buy the "Absolute OpenBSD" book from Michael W. Lucas to figure out how to do them. This could've taken you 3 pages to explain in full depth. Also, how can the network interfaces not be "too interesting" in our context, pf is a network packet filter, and there is no network without network interfaces.Finally, for those of you thinking about buying this book or work with PF at all, especially professionally:BUY THIS BOOK. THERE IS NO BETTER RESOURCE OUT THERE FOR PF!!!Simply be aware that you also need Michael W Lucas's Absolute OpenBSD book. Also, don't forget your man pages and OpenBSD's FAQ section. That FAQ section is truly amazing!Additionally:This book is great in so many ways. The content is phenomenal. The author starts with a bare bone configuration and builds on that from chapter to chapter. There are great examples about pretty much any setups that can be used in the real world. Really, ANY!Update #1: November 13th 2018I have to down grade this book. The author of this book is simply not a good teacher. Full of knowledge yes, but can't explain it well. SO MANY ASSUMPTIONS. HE DOESN'T STOP TO EXPLAIN ANYTHING! I've never seen a technical book so badly written. The sad part is, the content is great: after you spend a couple of days between the man pages, additional articles and tutorials on the web, and re-reading the book pages over and over. This book has made my experience with PF terrible! I'm sorry Mr Hansteen, but you need to re-write this book. Partner up please. This book should've been many more pages long.

This is *THE* reference you need when setting up a PF-based router/firewall device. Overall the organization of the book is thoughtful and there are great explanations and examples throughout. I particularly liked how the author started with a bare-bones 2-line rule set and progressed to a much more complex network carrying the rule set throughout and adding to it as new topics are covered.The only part of the book that I thought could have been done better was chapter 5 (DMZs). The author jumped between a DMZ on the same RFC 1918 subnet (via NAT/port forwarding) and a DMZ on a separate RFC 1918 subnet (still port-forwarded). Perhaps forking the running rule set in that chapter to illustrate both approaches would have been clearer and easier to follow than cutting the rule set over in a back and forth fashion as the DMZ approach changed in the discussion. I also would have liked to have seen a more developed example rule set of a DMZ that uses public IPs and a LAN that uses NAT/RFC 1918 addresses complete with rules for accessing the DMZ public IP servers from the LAN network. Some flipping between the examples in chapter 5 and the PF man page got me where I wanted to be though.Its a great book overall that vastly improved my knowledge of PF. I'm so happy to now have a solid and secure OpenBSD network appliance that I can understand in detail how it works.

This book is dangerous. It teaches sooo many new and useful features that you'll find yourself constantly revising and updating pf rules on your FreeBSD servers!Some highlights:1. This book demonstrates not only how tables work but also shows how to generate them from text files.2. This book provides several examples of pf rules and usage. Some example include: end-user host, gateway, NAT gateway, WLAN access, a bridging firewall, a web server, and a mail server.3. This book goes into deep detail about traffic queuing (ALTQ), traffic shaping, and redundancy (CARP and pfsync.)There is even a chapter with suggestions about what should be tuned and what should NOT.It isn't a thick book but it covers a broad range of pf features, configuration bits, and examples. If you maintain and support pf firewalls, you need this book.

If you find yourself suddenly managing an OpenBSD-based firewall (i.e. PF) , THIS IS the book that you want to have at your desk and in your backpack.If you want to give OpenBSD's PF a try for your home lab or work network, I would definitely recommend this book to you.For the past few years, I have been managing a good-size network protected by a couple CARP-ed OpenBSD servers and this book (and it's 2nd edition) have helped me a great deal. Peter Hansteen knows what he is talking about. I recommend watching this interview with him on BSD Now:http://www.jupiterbroadcasting.com/56402/puffy-firewall-bsd-now-35/Also, I highly recommend getting Michael W Lucas's book "Absolute OpenBSD" http://www.amazon.com/Absolute-OpenBSD-Unix-Practical-Paranoid/dp/1593274769/ref=sr_1_1?s=books&ie=UTF8&qid=1424148306&sr=1-1&keywords=absolute+openbsdPeter Hansteen and Michael W Lucas are two fine sysadmins who also happen to be great writers.

It’s about 5 years old but still relevant. It’s an excellent foundation which can be easily tailored to your needs. As the title states, it’s a straight-to-the-point piece of literature, which is important for many of us. You can easily get through it in a few days. The author writes and teaches very well. PF will really grow you. It’s a lot of fun fighting back, and even playing games with malicious hackers.

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The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall PDF

The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall PDF

The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall PDF

The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall PDF