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.
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