Private IP addresses are defined in RFC 1918. Theses addresses can be used on a private network, but they’re not routable through the Internet. By using private IP addresses, ISPs, corporations and home users can use some times only one public IP address to connect all internal systems to the internet. This is very economical
If you are in IT consulting field many times you will be assigned task of creating IPv4 addressing for enterprise. Here we will pass on to you our experience of designing internal IP addressing using private IP range. On internal network we will use private IP range which is defined in RFC 1918.