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M5 internet systems & applications ii

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M5 internet systems & applications ii

  1. 1. IntroductionMaster Class 5Internet infrastructures & Technologies :Internet Systems & applications IIJosep Bardallo 2012
  2. 2. 230 / 10 / 2012Josep BardalloServices used in Internet (application layer)
  3. 3. 330 / 10 / 2012Josep BardalloWeb Server. Definition Webserver: A computer that deliver content in Internet. The primary function of a web server is to deliver web pages on therequest to clients using the Hypertext Transfer Protocol (HTTP).
  4. 4. 430 / 10 / 2012Josep BardalloWeb Servers. Elements The Web server includes the hardware, operating system, Webserver software, TCP/IP protocols and site content (Web pages,images and other files). A user agent (web browser), initiates communication by making arequest for a specific resource using HTTP and the server respondswith the content of that resource or an error message if unable to doso. Web servers are not only on Internet. HTTP server software iscommonly built into hardware to provide a control panel forconfiguring the device from any Web browser, or for Intranets.
  5. 5. 530 / 10 / 2012Josep BardalloWeb Servers in the world by domain (Oct. 2012)
  6. 6. 630 / 10 / 2012Josep BardalloWeb Servers Architecture: 3 Tier Layer
  7. 7. 730 / 10 / 2012Josep BardalloTypical architectures: Standard services in a company
  8. 8. 830 / 10 / 2012Josep BardalloTypical architectures: Complex Web environment.Sample 1 (Real Case)
  9. 9. 930 / 10 / 2012Josep BardalloTypical architectures: Complex Web environment.Sample 2 (Real Case). Car selling
  10. 10. 1030 / 10 / 2012Josep BardalloTypical architectures: Complex Web environment.Sample 3 (Real Case). City Council
  11. 11. 1130 / 10 / 2012Josep BardalloTypical architectures: Complex Web environment.Sample 3 (Real Case). City Council
  12. 12. 1230 / 10 / 2012Josep BardalloTypical architectures: Complex Web environment.Sample 3 (Real Case). City Council
  13. 13. 1330 / 10 / 2012Josep BardalloWeb Servers. Top 500 siteshttp://www.alexa.com/topsites
  14. 14. 1430 / 10 / 2012Josep BardalloNumber of servers of Top 100 (estimated andgrowing) Google: estimated more than 900.000 servers Amazon: 500.000+ (322.000+ Virginia, 1.600 in Sao Paulo in 25racks) Microsoft 300.000+ servers Facebook: 180.000+ QVH: 120.000+ servers Softlayer, Rackspace, Akamai, Yahoo: 100.000+ servers Intel, 1&1, Ebay, GoDaddy: 70.000+ servers Verizon, Time Warner: 30.000+ servers
  15. 15. 1530 / 10 / 2012Josep BardalloWeb Servers Technology
  16. 16. 1630 / 10 / 2012Josep BardalloWeb Servers Technology
  17. 17. 1730 / 10 / 2012Josep BardalloUser Agent: Operating Systems in Internet
  18. 18. 1830 / 10 / 2012Josep BardalloUser Agent: Web Browsers in Internet
  19. 19. 1930 / 10 / 2012Josep BardalloUser Agent: Web Browsers in Internet. Trends
  20. 20. 2030 / 10 / 2012Josep BardalloUser Agent: Web Browsers in Internet. By Country
  21. 21. 2130 / 10 / 2012Josep BardalloSecure Servers (SSL) Secure Sockets layer (SSL) is a form of protocol, used by e-commerce sites, on-line banking and financial services to securecommunications by encrypting the data transmitted between twopoints over Internet When the user enters a site with SSL certificate, they public key ofthe site certificate is received by the browser and used to encryptthe submitted information. The data can only be decrypted with thekey issued to the certificated site, assuring it will be readable onlyby the internet intended recipient.
  22. 22. 2230 / 10 / 2012Josep BardalloEmail Electronic mail, or e-mail, is a method of exchanging digitalmessages from an author to one or more recipients
  23. 23. 2330 / 10 / 2012Josep BardalloEmail: Elements Email Client, SMTP Server (MTA), POP Server
  24. 24. 2430 / 10 / 2012Josep BardalloEmail: Workflow
  25. 25. 2530 / 10 / 2012Josep BardalloMTA Vendors
  26. 26. 2630 / 10 / 2012Josep BardalloEmail: Some numbers
  27. 27. 2730 / 10 / 2012Josep BardalloEmail: Some numbers
  28. 28. 2830 / 10 / 2012Josep BardalloEmail: SPAM
  29. 29. 2930 / 10 / 2012Josep BardalloInternet Video & Images
  30. 30. 3030 / 10 / 2012Josep BardalloStorage in Internet
  31. 31. 3123 / 10 / 2012Josep BardalloBibliography http://w3techs.com/technologies/cross/web_server/ranking http://gigaom.com/cleantech/facebooks-number-of-servers-soar-to-an-estimated-180k/ http://news.netcraft.com/archives/2012/07/03/july-2012-web-server-survey.html http://www.radicati.com/wp/wp-content/uploads/2011/05/Email-Statistics-Report-2011-2015-Executive-Summary.pdf http://www.clickz.com/type/news/category/stats http://www.symantec.com/theme.jsp?themeid=state_of_spam http://www.mailradar.com/ http://www.w3counter.com/globalstats.php?year=2012&month=9 http://marketshare.hitslink.com/ http://www.wired.com/wiredenterprise/2012/03/amazon-ec2/

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