PfSense is a free and open-source firewall and routing platform based on FreeBSD. It can be installed via live CD, USB, or serial connection. PfSense offers robust, highly available, free, scalable, and flexible network security management through features like firewall, NAT, VPN, DHCP server, load balancing, and multi-WAN support. It allows users to replace their existing router or firewall with an alternative that provides more control and customization of their network security and traffic routing.

1. Managing Network Security with
pfSense
Installing pfSense
There are three ways you can install pfSense:
Why pfSense?
Here are some of the benefits of pfSense.
Robust
Highly
available
Free
Scalable
Flexible
Live CD Memstick
/USB
Serial
Memstick
@tetranoodle

2. Managing Network Security with
pfSense
pfSense Use Case
Here are some of the benefits of pfSense.
Features:
ISP Modem/
Router
Internet Switch
DHCP Server
DHCP Relay Agent
Firewall
Computers
NAT
MultiWAN
Server Load Balancing
VPN
@tetranoodle