The OpenBSD Packet Filter (OpenBSD PF) is the stateful firewall package that is part of the OpenBSD kernel since OpenBSD 3.0. This document describes how to set up and manage PF rulesets and NAT mappings.
The intended audience for this document are system- and network administrators with at least a basic knowledge of (inter)networking and the network protocols involved. Knowledge of other firewall systems is not required, but can help in mastering the more complex topics.
This document is currently a work-in-progress, so not everything regarding OpenBSD PF may be covered yet.
The OpenBSD Packet Filter HOWTO version 20020405.2
Copyright (C) Wouter Coene, 2001, 2002.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
THIS DOCUMENT IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
You can contact the Wouter Coene through email at firstname.lastname@example.org, or via snail-mail:
De Deel 17 3471 EN Kamerik The Netherlands