It is the process where network device usually is a firewall that assigns public address to a computer inside a private network. Its main purpose is to limit the number of public IP addresses for security purposes. Network Address Translation (NAT) has other uses too beyond simply allowing workstation with internal IP addresses to access the internet. It can act as Web servers and require access from the internet. It can also allow selective access to outside of the network. For instance, workstation requiring special access outside the network can be assigned specific external IPs using the NAT which allows them to communicate but it require a unique public IP address. NAT also handles conversion of the public and private addresses as showing only the public IP on the internet keeping the private IP hidden. This will help to ensure the security and also offers the opportunity to qualify or authenticate the request to the request.NAT also acts as the firewall and it is an important feature of firewall security. It conserves the public address used in a company and allows stricter control of access to resources on the firewall.
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