How to find corresponding mac address from given IP address on system?
ARP stands for Address Resolution Protocol, which is used to find the media access control address of a network neighbor for a given IPv4 Address.
On Ubuntu this is how you find mac address
$>ifconfig -a | grep HWaddr
What is a NAT IP address?
Network Address Translation (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.