Network Security with pfSense

Port forwarding or Network Address Translation

You can also use pfSense to forward ports or Network Address Translation (NAT). NAT is the process where a network device, usually a firewall, assigns a public address to a computer or group of computers inside a private network. The main use of NAT is to limit the number of public IP addresses an organization or company must use for both economy and security purposes. NAT helps improve security and decrease the number of IP addresses an organization needs. NAT gateways sit between the two networks—the inside network and the outside network. Systems on the inside network are typically assigned IP addresses that cannot be routed to external networks.