1. The Internet The History and Future of the Internet

2. The Origin of the Internet ARPANET: Advanced Research Projects Agency Network Funded by the U.S. government in the 1960s, lasts until 90's Allowed computers at leading universities and research organizations to communicate with each other over great distances First Working Version of the Packet Switching Network

3. NSFNet – National Science Foundation Network Connecting 5 supercomputers and the researchers using them, 1986 commercialization of the Internet - late 80's NSF stops funding the Net - 1994

5. History of the Internet Internet was designed to work well over bad connections - will retry sending packets, reroute as needed to get through ARPANet - Department of Defense NSFNet - connecting supercomputers for research Early Internet was NOT allowed to be commercial!

6. 3-6 The World Wide Web The Web and the Internet are not the same thing; the Net is much older! The Net started in the 60’s, the Web in the 90’s Web servers: Computers programmed to send files to browsers running on other computers connected to the Internet Web servers and their files make up the World Wide Web The Web is the interface, the Internet is "behind the scenes" The Internet is the “road,” the Web is just one form of “traffic” on the road

7. The Internet vs. The Web Internet – part of the system that is primarily hardware infrastructure (telecommunications, routers, servers, disk drives, networking software, protocols, packets, etc.) Web – part of the system that contains intellectual property in many formats (text files, graphic files, sound files, video files, etc.) The Internet existed before the WWW interface – people used command line programs to retrieve email and files of all types, to search for information

8. Future of the Internet Internet2: Project sponsored by universities, government, and industry to develop new Internet technologies Internet2 backbone supports transmission speeds of 9.6 Gbps IPv6 is the new Protocol that will use 128 bits for each address (IPv4 uses 32 bits)