Internet has greater contribution towards modern civilization. Next generation will share this contribution of technological knowledge. Internet protocol is the necessary things for computer networking. Computer networking totally depends on this protocol. In this book I have written about total descriptions of Internet Protocol version 4 and 6. I have also shown the relations, advantages, disadvantages between Ipv4 and 6 and the difference between these two technologies. I have also shown the implementations of these technologies by analyzing the technology, network designing and testing the some part of this technology. I hope you will read my book and write a good review about my book.