Internet and the Web

Internet and the Web - InternetandtheWeb AnIntroduction 1...

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1 Internet and the Web  An Introduction
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Internet vs. WWW 2 The Internet? The Internet is a massive network of networks, a networking infrastructure. It connects millions of computers together globally, forming a network in which any computer can communicate with any other computer as long as they are both connected to the Internet. Information that travels over the Internet does so via a variety of languages known as protocols. The Web (World Wide Web)? The World Wide Web is a way of accessing information over the medium of the Internet. It is an information- sharing model that is built on top of the Internet.
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3 Internet and the Web History of the Internet MIT researcher J.C.R.Licklider (1915-1990) Published a series of articles: Galactic Network of computers that would allow people worldwide to share and access information. This would benefit researchers across the nation. This would reduce computing costs because resources could be shared.
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4 Internet and the Web Licklider 1962: appointed head of computer research program at the US Department of Defense's Advanced Research Project Agency (ARPA). 1967: Larry Roberts named head of ARPA project: ARPANet Labor Day,1969: ARPANet is a reality linking four computers UCLA UCSB Stanford Research Institute University of Utah
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5 Internet and the Web Researchers at the four institutes were able to connect to one-another's computers run programs remotely share hardware and software costs share information by transferring text and data files from one location to another
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6 Growth
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  7 First FTP developed in 1971 First email developed in 1971-1972; folks at universities could communicate over the NSF network. This was not connected to commercial networks 1989 NSF lifted its email restriction and allowed email connectivity for two commercial network vendors: Compuserve and MCI Mail. 1991 commercial restrictions began to be phased out and NSF developed plans to turn its Internet over to the private sector.
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8 Growth
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9 Growth 1980s electronic mail newsgroups remote logins 1984 ARPANet encompassed more than 1000 computers NSF becomes involved (funds high speed transmission lines)
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1980s Internet worm: In 1988, Robert Morris´ worm flooded the ARPANET. Then-23-year-old Morris, the son of a computer security expert for the National Security Agency, sent a nondestructive worm through the Internet, causing problems for about 6,000 of the 60,000 hosts linked to the network. Morris was sentenced to three years of probation, 400
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Internet and the Web - InternetandtheWeb AnIntroduction 1...

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