TCP/IP Three-Way Handshake In May 1974 the Institute of Electrical and Electronic Engineers (I EEE) publish a paper entitled” A Protocol for Packet Network Intercommunication”. This document describes an Internet internetworking protocol for sharing sources using packet switching. A central control component of this model which was the Transmission Control Program that incorporated both connection – oriented links and datagram service between hosts. The monolithic Transmission Control Program was later divided into a modular architecture consisting of the Transmission Control Protocol at connection – oriented layer and the Internet Protocol at the internetworking layer. The model became known as TCP/IP. TCP/IP is the backbone of the Internet of today. Comprised of two protocols which is known as TCP and IP. The TCP/IP protocol is one of the most widely used by corporations and household today. The Internet protocol (IP as is generally known) is the network layer of the Internet. The job of IP is to route and send packets to the package destination. IP provides no guarantee for the packets try to deliver. The IP packets are usually turn datagram. The datagram go to a series of routers before they reached the destination. Since the network has variable delay, it is no guarantee that the datagram will receive in sequence. IP only tries for best-effort delivered. Transmission control protocol (TCP) runs on top of IP improvised a connection on his service between the sender and receiver. TCP provides guaranteed delivery. TCP also ensures
