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 DHCP relay

This recipe describes how to configure pfSense to relay DHCP request between broadcast domains. This serves as an alternative to pfSense acting as a DHCP server.

Getting ready

pfSense can only be configured as a DHCP relay if the DHCP server has been disabled on all interfaces. If necessary, disable the DHCP server first. To disable the DHCP server, do the following:

  1. Navigate to Services|DHCP Server.
  2. Click on the tab for the interface on which the DHCP server is enabled (for example, LAN).
  3. Uncheck the Enable DHCP Server on the interface checkbox.
  4. Click on the Save button.
  5. Repeat Steps 2 through 4 for each interface on which the DHCP server is enabled.

How to do it...

  1. Navigate toServices | DHCP Relay.
  2. Check the Enable DHCP relay on interface checkbox:
  1. Select the interface on which the DHCP relay will be applied. Hold down the Ctrl key while clicking on an interface in the list box to select multiple interfaces.
  2. If you want to append the circuit ID and agent ID to DHCP requests...