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The Politics of the Internet - Week Two Outline of Week Discuss the history of the Internet Origins in ARPANET Creation of WWW Discuss what the Internet is. Different layers Discuss how the Internet is run IETF, ICANN etc Discuss ‘topology’ of the Internet The Politics of the Internet – Week Two How did the Internet begin? Almost by accident The idea of a distributed system of communication. For academic institutions engaged in military research Helped in sharing of computer resources More likely to survive nuclear war The Politics of the Internet – Week Two The initial proposal - ARPANET Set up by the ARPA – a subsection of the US Department of Defense US company created in late 1969 (a) The software to manage a network (b) A network that joined together a few computers on the East and West coast The Politics of the Internet – Week Two ARPANET – key features ARPANET aspired to be distributed – it was designed so that information could move without central organization Completely different from phone system ARPANET was also designed to allow different systems to communicate (through specialized computers called IMPs). Thus, emphasis on sharing information and connecting networks rather than imposing a common design. The Politics of the Internet – Week Two Unexpected consequences ARPANET was supposed to be all about sharing of computer resources for research No commercial uses were allowed Ended up being a lot more Invention of email, and @ symbol in early 1970s – a big surprise First computer game, “Adventure” The Politics of the Internet – Week Two ARPANET was run by scientists and enthusiasts Decisions about how the Internet would be run were taken by consensus Easy to manage when there were only a couple of hundred people really involved The Politics of the Internet – Week Two Origins of the Internet As ARPANET grew, people began thinking about how to connect it to other networks. A new initiative – “The Internetting Project” In 1974, creation of TCP/IP, the foundation of the Internet Protocol allowed reliable communication between very different computers. The Politics of the Internet – Week Two Spread of the Internet In the 1980’s other networks began to emerge using the Internet standard This was the “Internet” But still confined to academics Technically challenging and unattractive for everyday users. The Politics of the Internet – Week Two Creation of the World Wide Web Key step in bringing the Internet to the masses was the World Wide Web Invented in CERN by Tim Berners-Lee Idea was to create a way in which documents could be organized on the Internet And could link to each other – with pictures and attractive text The Politics of the Internet – Week Two Getting the World Wide Web off the ground Took some years and effort to launch the World Wide Web – even among academics A lot of resistance to it. Then, first major web browser was created, Mosaic in the University of Illinois A smart student, Marc Andreesen wrote it, and soon went off to found Netscape The Politics of the Internet – Week Two Netscape and the Web Netscape opened up the Internet – people began to realize that it had possibilities outside universities and research institutions US government began to allow commercial activity Creation of “dot coms” – Amazon, Ebay, Toys.com, Pets.com etc The Politics of the Internet – Week Two The Politicization of the Internet The Internet became a more and more commercial space Less room for old academic ethos of sharing and cooperation Also became a much more political space Politicians started to get interested, firms and consumers began to press for regulation. The Politics of the Internet – Week Two Keeping the government out US played key role in deciding how the Internet was run US policy makers sought to keep government out of the Internet Argued that the Internet could be run by private actors, and by firms Didn’t always work out this way The Politics of the Internet Where we are today Internet – and Internet policy is now a major battleground Firms and governments fighting for their interests Some of the old legacy persists Decentralization of ARPANET Consensus decision making on many important issues The Politics of the Internet – Week Two Understanding the Internet What is the Internet Everyone thinks they know – but complicated Take Senator Ted Stevens How the Internet actually works Hint: it’s not a series of tubes … 3 levels Physical infrastructure Communication Protocols (TCP/IP) Applications The Road System Routers, Network and Backbone The Rules of the Road TCP/IP – Packet Switching Trucks, cars and buses Applications layer World Wide Web, Email, FTP The Politics of the Internet – Week Two The Physical Infrastructure • Basic Infrastructure • A network of specialized computers. • Routers – computers that receive and forward data • Computers are connected by a network of pipelines that carry the data • Fattest pipelines make up the Internet “backbone” The Politics of the Internet – Week Two The Physical Infrastructure II - Routers Routers Computers receive data in packets Then send these packets on to another router And so on, until the data reaches its final destination The Politics of the Internet – Week Two The Physical Infrastructure – The Network How does the network operate in practice? Telephone/Cable/DSL connections (home users) – connect to Internet Service Provider Internet Service Provider buys bandwidth on network from regional provider Regional provider buys space on backbone Internet Connections – Map The Politics of the Internet – Week Two Mapping the Internet How does information find its way around? Each computer on the Internet has an unique address There are a small number of specialized computers that maintain a directory of which computer has which address When packets are sent, they refer to this directory in order to figure out where to go The Politics of the Internet – Week Two What is a Protocol? Origins in Greek word, Protokollon, the first index page of a manuscript. Modern use of the word means an agreement between diplomats Use in technology is a combination of the two A protocol defines the specific form in which information is communicated. The Politics of the Internet – Week Two Communicating on a distributed network Level Two – Communications Protocols TCP/IP – the fundamental cornerstone of the Internet – allows packet switching Transfer Control Protocol/Internet Protocol The Politics of the Internet – Week Two Chopping information up Information (say, an email) is chopped up into “packets” Each packet is then given a header (like the envelope of a letter) Information about length of packet Where the packet fits Where it is going to How many other packets are out there All of the packets are then sent out onto the Internet. The Politics of the Internet – Week Two “Packet switching” in practice Each packet may take its own route through the Internet Different packets may go different ways – depending on which parts of the network are clogged Finally, all packets should reach the final destination The Politics of the Internet – Week Two Reassembling Packets Computer at the destination then puts packets together again It knows which packets should go where It also can detect if a packet has gotten garbled Or if a packet has gotten lost The Politics of the Internet – Week Two Applications Applications protocols are TCP/IP compatible ways of exchanging specific information If TCP/IP is the traffic control system, applications protocols are the vehicles. The Politics of the Internet – Week Two Examples Email – governed by a whole lot of protocols – you really don’t want to know how complex it is. FTP – File Transfer Protocol HTTP – the basic protocol underlying communication on the World Wide Web The Politics of the Internet – Week Two Who runs the Internet The answer is really, really complicated It depends on which of the three layers you are talking about (1) Physical infrastructure – run by a mix of firms and government (2) TCP/IP run by the Internet Engineering Task Force (IETF) Domain name system run by ICANN Other protocols run by different groups within the IETF The Politics of the Internet – Week Two The physical infrastructure Used to be run by the US government But now more and more dominated by private firms Have created their own fast speed communications networks Government and military still have some role The Politics of the Internet – Week Two The TCP/IP protocol Who created the TCP/IP protocol, and who can change it? NOT the US government NOT the governments of the world NOT big business (although it is getting more and more of a voice) Programmers The Politics of the Internet – Week Two The IETF The Internet Engineering Task Force (IETF) Non-hierarchical organization Discusses changes to TCP/IP and a lot of other protocols And then announces them – by and large, people adopt these changes, although the IETF has no formal powers. The Politics of the Internet – Week Two ICANN There is a complicated relationship with ICANN – “The Internet Corporation for Assigned Names and Numbers.” ICANN was set up to administer Domain Name System – i.e. which computer on the system gets which name Has become more and more controversial The Politics of the Internet – Week Two The W3 Consortium The World Wide Web (WWW) is slightly different It relies on a language called HTML (HyperText Markup Language) and HTTP (HyperText Transfer Protocol) This language is developed by a IETF-type organization called the W3 Consortium Same sorts of processes of decision-making. The Politics of the Internet – Week Two Who controls other applications Other aspects of application protocols are handled by the IETF, or sometimes by firms For example, Java is run by Sun Microsystems • Control of protocols is sometimes a key commercial advantage • This is apparent in old and new Microsoft battles The Politics of the Internet – Week Two Network Topology If the Internet is a network, what does it look like? Network topology (i.e. the ‘shape’ of the network) is key – it helps determine the politics. Some kinds of network are much more easily subjected to political control than others. Different Kinds of Network The Politics of the Internet – Week Two What does the Internet look like The Internet was supposed to be a ‘distributed’ network. This would have meant that it was highly resistant to control, to breakdown and to attacks. But in fact, the Internet has developed in an unplanned way so that it isn’t a distributed network in the proper sense of the word. What The Internet Looks Like The Politics of the Internet – Week Two Internet looks like something between a distributed and a decentralized network – i.e. some parts of the network are much more important (have much more incoming and outgoing links) than others. This means that it is much more subject to disruption or to control than a classic decentralized network. We’ll talk about the effects of this next week. The Politics of the Internet – Week Two What we have learned - History Beginnings of Internet in ARPANET Distributed network Development of new, unforeseen uses Creation of TCP/IP Creation of World Wide Web Popularization of Internet New Political Issues The Politics of the Internet – Week Two What we have learned – The Internet Three Layers Physical infrastructure Routers, pipelines, backbone Communications protocol TCP/IP and packet switching Applications protocols Email, WWW, FTP The Politics of the Internet – Week Two How the Internet is run Different Actors on different levels Physical infrastructure Run by firms, some government role Communications protocol/Domain names TCP/IP run by IETF Domain name system run by ICANN Applications protocols Run by IETF, WWW consortium, firms The Politics of the Internet – Week Two Physical topology of the Internet Differences between centralized, decentralized and distributed networks. Actual topology of the Internet What this means for the politics of control.