PfSense is a very popular Firewall. The platform is widely deployed to address secure networking needs including: – Load Balancing – Traffic Shaping – Captive Portal – UTM Device – DNS / DHCP Server – IDS / IPS – Transparent Caching Proxy – Web Content Filter The following diagram represents a simple and common architecture for small/medium size enterprises in order to protect their internal assets. The design is presented in a High-Availability mode.
What is one of its biggest advantage? it’s open source and free
Find a complete installation guide and much more documentation in the following link: https://docs.netgate.com/pfsense/en/latest/index.html