|Firewalling with OpenBSD's PF packet filter|
Work in progress edition:
Several formats http://home.nuug.no/~peter/pf/
This is where updated versions will appear more or less in the natural course of tinkering, in between events. Please let me know if you want to be told of future updates. That page usually also contains links to the latest version of the slides belonging to the somewhat more extensive PF tutorial.
If you have enjoyed this tutorial or found it useful, please go to the OpenBSD.org Orders page and buy CD sets, or for that matter, support further development work by the OpenBSD project via a donation.
If you are in a position to donate hardware, make sure you check OpenBSD developers' hardware wishlist at http://www.openbsd.org/want.html and get in contact with the right people in the project to arrange the details.
If you've taken this in at a conference, there might even be an OpenBSD booth nearby where you can buy CDs, T-shirts or other items.
Remember, even free software takes real work and real money to develop and maintain.
|The Book of PF|
The Book of PF, by the same author, was initially published by No Starch Press at the end of 2007, and was succeeded by the second edition in November 2010, and again updated for a third edition in 2014. The book is an expanded and extensively rewritten followup to the tutorial, and covers a range of advanced topics in addition to those covered here. You can buy it through the first link and let me have a slightly larger amount for that copy and sooner, or you could go to The OpenBSD Bookstore.