pfSense is an open source firewall and router software solution that is based on the FreeBSD operating system. It has been designed to provide superior network security, performance, and reliability to customers who require a secure network perimeter. It is a highly configurable, full-featured security solution that supports a wide range of applications and services. pfSense is a stateful packet filtering firewall, VPN, and router that allows administrators to control network traffic in a secure and efficient manner. It can be used to protect networks from malicious intrusions, and to securely connect remote sites to each other. pfSense provides a robust set of features, such as a web-based interface, granular user access control, VLANs, traffic shaping, bandwidth monitoring, and much more. It has been designed to be easy to install and configure, and can be quickly deployed in a variety of network topologies. pfSense is also used as an enterprise-level security solution for high-traffic networks. It supports a wide range of hardware, and is compatible with many popular open source applications and services. With pfSense, network administrators can create secure and robust networks with minimal effort.
OPNSense has the missing features in pfSense.