Traffic shaping in pfSense can be a challenge to configure, partially because of the number of options and the complexity of the shaper rules and shaper queues. It is generally recommended that you begin with the web GUI's traffic shaper wizard. You can access the wizard by clicking on Firewall | Traffic Shaper and then clicking on the Wizards tab. There are currently two wizards available: Multiple Lan/Wan and Dedicated Links. Multiple Lan/Wan can be used in a variety of scenarios in which there are one or more LAN-type interfaces, and one or more WAN interfaces. Dedicated Links, on the other hand, is designed for cases in which specific LAN/ WAN pairings do not mix with other traffic. For example, users on one subnet may have a different internet connection than users on another subnet. Therefore, there are two separate WAN interfaces (one for each internet provider). Traffic from one LAN interface goes to WAN, while traffic from another LAN interfaces goes to WAN2. Each LAN-WAN link has its own traffic shaping requirements, and this is where the Dedicated Links wizard helps. In most cases, however, you will not have dedicated WAN links, so Multiple Lan/Wan will be the correct choice.