Book Image

Mastering pfSense - Second Edition

By : David Zientara
Book Image

Mastering pfSense - Second Edition

By: David Zientara

Overview of this book

pfSense has the same reliability and stability as even the most popular commercial firewall offerings on the market – but, like the very best open-source software, it doesn’t limit you. You’re in control – you can exploit and customize pfSense around your security needs. Mastering pfSense - Second Edition, covers features that have long been part of pfSense such as captive portal, VLANs, traffic shaping, VPNs, load balancing, Common Address Redundancy Protocol (CARP), multi-WAN, and routing. It also covers features that have been added with the release of 2.4, such as support for ZFS partitions and OpenVPN 2.4. This book takes into account the fact that, in order to support increased cryptographic loads, pfSense version 2.5 will require a CPU that supports AES-NI. The second edition of this book places more of an emphasis on the practical side of utilizing pfSense than the previous edition, and, as a result, more examples are provided which show in step-by-step fashion how to implement many features.
Table of Contents (15 chapters)

Multiple WANs

In the previous chapter, we discussed how to incorporate redundancy and high availability into our networks by implementing server load balancing and a firewall failover group. One problem that we did not address, however, was how to ensure redundancy and high availability in our connection to the public internet. Businesses that want to ensure that access to the internet is always available will want to eliminate single points of failure. We do this through a multi-WAN setup, which is the main topic of this chapter. Fortunately, pfSense makes it easy to implement such a setup.

In this chapter, we will cover the following:

  • The basic concepts of multi-WAN
  • Setting up multiple WANs for load balancing/failover
  • An example multi-WAN setup
  • Troubleshooting