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

Configuring the DNS resolver

This recipe describes how to configure the DNS resolverin pfSense. The DNS resolver allows pfSense to act as a DNS server.

Getting ready

The DNS resolver allows pfSense to resolve DNS requests using hostnames obtained by the DHCP service, statically obtained DHCP mappings, or manually obtained information. The DNS resolver can also forward all DNS requests for a particular domain to a server specified manually.


Prior to pfSense Version 2.2, DNS forwarder was the default DNS server for pfSense. Version 2.2 and later iterations use Unbound (DNS resolver) as the default DNS server; however, DNS forwarder is still available.

How to do it...

  1. Navigate to Services|DNSResolver.
  2. Check theEnable DNSResolvercheckbox.
  1. If you want to ensure that all nodes listed in Status | DHCP Leases that specified their hostname when requesting a lease are registered in the DNS resolver, check theRegister DHCP leases in the DNS Resolvercheckbox.
  2. If you want to ensure that all nodes with a...