Example image of eyePlorer eyePlorer map for 'Internet Protocol Suite': Communications protocol Internet Internet Protocol Transmission Control Protocol Local area network World Wide Web Upper layer protocol Lower layer protocol Application Layer Internet Layer Link Layer Transport Layer DARPA ARPANET Bob Kahn Information Processing Techniques Office Network Control Program Vint Cerf Internetwork protocol CYCLADES Hubert Zimmerman Louis Pouzin Gateway (telecommunications) Packet (information technology) Router Internet Architecture Board Encapsulation (networking) Internetworking Request for Comments Physical Layer Data Link Layer OSI model Network Layer Session Layer Presentation Layer Embedded system KA9Q LwIP Open source Packet radio Personal computer Douglas Comer List of TCP and UDP port numbers Joseph G. Davies Thomas F. Lee Ian McLean W. Richard Stevens Hypertext Transfer Protocol Network News Transfer Protocol TCP