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)


In troubleshooting multi-WAN setups, we can group the problems we are likely to encounter into three broad categories:

  • There may be a connectivity issue with either your primary or secondary connection.
  • There may be a misconfiguration in your setup.
  • pfSense thinks a gateway is up when it is actually down, or vice-versa.

The first point seems rather obvious, but you'll want to make sure that both connections are working independent of the gateway group. If the second connection accounts for a low percentage of our overall bandwidth (for example, our primary connection is broadband and our secondary connection is DSL), or is part of a failover group, then we might not notice it is not working until the primary connection fails. Ensuring that both connections work when we first set things up will potentially save us some grief; we wouldn't want to wait...