1. Internet Technology I د. محمد البرواني

2. Project Number 3 Computer crimes in the cybernet Computer crimes in the cybernet Privacy in the cybernet Privacy in the cybernet

3. Objectives Briefly describe the history of the Internet Briefly describe the history of the Internet Describe what is needed to get on the Internet Describe what is needed to get on the Internet Describe generally what an Internet service provider does Describe generally what an Internet service provider does Describe the functions of a browser Describe the functions of a browser Describe how to search the Internet Describe how to search the Internet

4. Objectives List and describe the non-Web services of the Internet List and describe the non-Web services of the Internet Describe what an intranet is and how a business uses it Describe what an intranet is and how a business uses it

5. Historical Overview 1969 : Advanced Research Project Agency (ARPANet) 1969 : Advanced Research Project Agency (ARPANet) –Connected computers at four locations (Universities) 1972: E-mail capability added by BBN company 1972: E-mail capability added by BBN company Telnet commercial use Telnet commercial use ARPAnet connects to European Universities ARPAnet connects to European Universities Late 70’s : start of Newsgroup (USENET) Late 70’s : start of Newsgroup (USENET) National Science Foundation connected its large network, NSFnet to ARPANET in 1986 National Science Foundation connected its large network, NSFnet to ARPANET in 1986 –Resulting network became known as the Internet

6. BITNET (Because Its Time Network) BITNET (Because Its Time Network) CSNET (Computer Science Network) CSNET (Computer Science Network) These Nets form what is known now by INTERNET These Nets form what is known now by INTERNET Beginning of 1990 : Gopher - Menu driven user interface to explore internet Beginning of 1990 : Gopher - Menu driven user interface to explore internet World Wide Web: WWW World Wide Web: WWW Companies to provide net services: ISP Companies to provide net services: ISP Companies produced Browsers Companies produced Browsers Companies produced Search Engines … Companies produced Search Engines …

7. Growth of Internet Growth in host computers Growth in host computers –72 million in 2000 –162 million in 2002 Growth in users worldwide Growth in users worldwide –567 million in 2002 –780 million in 2003

8. Numeric Computer IP Address

9. Domain and Host Names __________. _______. _____________ __________. _______. _____________ sub Domain Domain Top level Domain sub Domain Domain Top level Domain

10. Examples www.ibm.com www.ibm.com www.ibm.com www.sales.ibm.com www.sales.ibm.com www.sales.ibm.com www.ksu.edu.sa www.ksu.edu.sa www.ksu.edu.sa

11. Domain Name Server (DNS) Translates Host (Domain) name to Numeric IP address Translates Host (Domain) name to Numeric IP address Example: Example: –www.yahoo.com www.yahoo.com –201.10.12.125

12. Web Sites A group of Hypertext documents stored in a web server A group of Hypertext documents stored in a web server –Layout تصميم –Content محتوى –Links روابط –Navigation tools أدوات الابحار في الويب URL (Uniform Resource Locator) URL (Uniform Resource Locator) http (Hyper Text Transfer Protocol) http (Hyper Text Transfer Protocol) HTML (Hyper Text Markup Language) HTML (Hyper Text Markup Language)

13. Web Sites Types Private Sites Private Sites Organizational Sites Organizational Sites Portal Sites Portal Sites

14. Web Pages Types Home page Home page Content pages Content pages

15. ISP and the Browser An Internet service provider (ISP) provides the server computer and software to connect to the Internet An Internet service provider (ISP) provides the server computer and software to connect to the Internet When you connect to the Internet, the browser displays a home page When you connect to the Internet, the browser displays a home page