How To Set Up an OpenBSD Router – Step-by-Step Tutorial

This article is a step-by-step guide about how to set up OpenBSD system that will act as a network router that takes advantage of the OpenBSD's PF packet filter.

1. OpenBSD Installation

Install OpenBSD by using this tutorial.

Now that you have OpenBSD installed, lets proceed with the next step.

2. OpenBSD Network Configuration

The network interface is configured at boot time using the /etc/hostname.if files, where if will be replaced by the full name of your interface, for the example above, /etc/hostname.xl0.

The layout of this file is simple:

address_family   address   netmask   broadcast   [other options]