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Internet Technology
I
‫ محمد البرواني‬.‫د‬
Project Number 3
• Computer crimes in the cybernet
• Privacy in the cybernet
Objectives
• Briefly describe the history of the Internet
• Describe what is needed to get on the
Internet
• Describe generally what an Internet
service provider does
• Describe the functions of a browser
• Describe how to search the Internet
Objectives
• List and describe the non-Web services of
the Internet
• Describe what an intranet is and how a
business uses it
Historical Overview
• 1969 : Advanced Research Project Agency
(ARPANet)
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– Connected computers at four locations (Universities)
1972: E-mail capability added by BBN company
Telnet commercial use
ARPAnet connects to European Universities
Late 70’s : start of Newsgroup (USENET)
National Science Foundation connected its large
network, NSFnet to ARPANET in 1986
– Resulting network became known as the Internet
• BITNET (Because Its Time Network)
• CSNET (Computer Science Network)
• These Nets form what is known now by
INTERNET
• Beginning of 1990 : Gopher - Menu
driven user interface to explore internet
• World Wide Web: WWW
• Companies to provide net services: ISP
• Companies produced Browsers
• Companies produced Search Engines …
Growth of Internet
• Growth in host computers
– 72 million in 2000
– 162 million in 2002
• Growth in users worldwide
– 567 million in 2002
– 780 million in 2003
Numeric Computer IP Address
Domain and Host Names
• __________ . _______. _____________
• sub Domain
Domain Top level Domain
Examples
• www.ibm.com
• www.sales.ibm.com
• www.ksu.edu.sa
Domain Name Server (DNS)
• Translates Host (Domain) name to Numeric IP
•
address
Example:
– www.yahoo.com
– 201.10.12.125
Web Sites
• A group of Hypertext documents stored in
a web server
– Layout
– Content
– Links
– Navigation
‫تصميم‬
‫محتوى‬
‫روابط‬
tools
‫أدوات االبحار في الويب‬
• URL (Uniform Resource Locator)
• http (Hyper Text Transfer Protocol)
• HTML (Hyper Text Markup Language)
Web Sites Types
• Private Sites
• Organizational Sites
• Portal Sites
Web Pages Types
• Home page
• Content pages