ABSTRACT
IMP was the first generation of gateways, which are known today as routers. This is where the foundation of interconnection of data networks was built. Ray Tomlinson, while working as a computer engineer for Bolt Beranek and Newman (BBN) Technologies, invented Internet-based electronic mail in late 1971, which became one of the most popular applications in the Internet. The file transfer protocol (FTP) was introduced through RFC 113 in 1971. Telnet specification RFC 137 was also released in 1971. Then in the following year, in 1972, through RFC 360, remote job entry (RJE) was introduced, which integrated telnet and FTP. Also, in October 1972, Larry Roberts and Robert Kahn demonstrated ARPANET at the International Conference on Computer Communication (ICCC) held in Washington, DC. In the spring of 1973, Vinton Cerf, the developer of the existing ARPANET network control program (NCP) protocol, joined Kahn to work on open-architecture interconnection models with the goal of designing the next protocol generation for ARPANET. ARPA then contracted with BBN Technologies, Stanford University, and the University College at London, England, to develop operational versions of the communication protocol on different hardware platforms. Four versions of the transmission control protocol (TCP) were developed: TCPv1, TCPv2, a split into TCPv3 and IPv3 in the spring of 1978, and then stability with
TCP/IPv4-the standard protocol still in use on the Internet [1]. This protocol was published through RFC 760 in January 1980.
