In this chapter, we introduced the concept of traffic shaping, discussed some basic traffic shaping algorithms, and introduced the pfSense traffic shaping wizard. We also discussed how to edit queues, how to add limiters, and how to add and edit traffic shaping rules. We showed how Snort can be used for Layer 7 (deep packet inspection) traffic shaping. Finally, we discussed some ways to troubleshoot traffic shaping issues.
Traffic shaping is one of a number of powerful tools that helps us to extend the functionality and security of our networks. In the next chapter, we will cover another such tool, one that enables us to send and receive data over public networks as if they are part of our private network: virtual public networks (VPNs).