What is NAT and what is it used for?
NAT is short for Network Address Translation. NAT is the ability of a firewall to translate the network addresses of each device (for example, a PC) on your business network into an address that can be sent out to the Internet. By translating the address, NAT ensures that the true address of an individual PC is never transmitted on the Internet – a major security plus. Additionally, NAT can save businesses money. Service providers often provide only one public IP address with a DSL or Cable modem. With a NAT-capable firewall, this one address can be used to represent all of the devices on the network.
