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Networking stuff for the day


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.