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)

Traffic shaping essentials

Traffic shaping allows us to prioritize some traffic over other traffic, in order to optimize/improve network performance, and in some cases, lower latency. The purpose of traffic shaping is to make network traffic conform to certain predefined constraints, generally known as either a traffic profile or contract. Your service level agreement (SLA) and/or traffic conditioning agreement (TCA) with your ISP defines what traffic your ISP will accept. One of the basic parameters of this is the data rate. If packets are sent from your local network to the ISP in such a way that violates these agreements, forwarding upstream may be denied. At the very least, forwarding may be not guaranteed. Thus, it is in our interests to make sure that the traffic leaving our network does not violate these agreements, and we utilize a traffic shaper to make sure our traffic...