Book Image

pfSense 2.x Cookbook - Second Edition

By : David Zientara
Book Image

pfSense 2.x Cookbook - Second Edition

By: David Zientara

Overview of this book

pfSense is an open source distribution of the FreeBSD-based firewall that provides a platform for ?exible and powerful routing and firewalling. The versatility of pfSense presents us with a wide array of configuration options, which makes determining requirements a little more difficult and a lot more important compared to other offerings. pfSense 2.x Cookbook – Second Edition starts by providing you with an understanding of how to complete the basic steps needed to render a pfSense firewall operational. It starts by showing you how to set up different forms of NAT entries and firewall rules and use aliases and scheduling in firewall rules. Moving on, you will learn how to implement a captive portal set up in different ways (no authentication, user manager authentication, and RADIUS authentication), as well as NTP and SNMP configuration. You will then learn how to set up a VPN tunnel with pfSense. The book then focuses on setting up traffic shaping with pfSense, using either the built-in traffic shaping wizard, custom ?oating rules, or Snort. Toward the end, you will set up multiple WAN interfaces, load balancing and failover groups, and a CARP failover group. You will also learn how to bridge interfaces, add static routing entries, and use dynamic routing protocols via third-party packages.
Table of Contents (18 chapters)
Title Page
Copyright and Credits
About Packt


Regardless of the size or purpose of your network, you will derive benefits from optimizing the performance of your network. One of the means we have of optimizing the performance is through traffic shaping, which allows us to manage traffic in such a way that some packets are prioritized over others. Without traffic shaping, packets are processed on a first-in, first-out (FIFO) basis. While this might be adequate in many cases, in other cases it can lead to saturated connections and increased latency.

The traffic shaper does its job by examining packets leaving network interfaces. If packets meet certain criteria, they are treated differently. In this sense, implementing traffic shaping is similar to implementing firewall rules. Yet rather than pass, block, or reject packets, we place packets that match the traffic-shaping criteria into separate queues. Priority traffic goes into a priority queue, where it is sent immediately. Lower priority traffic is held back until the higher...