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  1. 1. Chapter 6 Internet Service Providers Hosting Your Web Site
  2. 2. OBJECTIVES <ul><li>How ISPs Work </li></ul><ul><li>How to Choose an ISP </li></ul><ul><li>How to Choose and Register Your Domain Name </li></ul>
  3. 3. Introduction <ul><li>Before you complete the design of web site, you need to find a way to put it on the Internet. </li></ul><ul><li>Internet Service Provider </li></ul><ul><ul><li>A specialized company that connects customers with PCs and browsers to the Internet </li></ul></ul>
  4. 4. Introduction <ul><li>1969 only four hosting company exist </li></ul><ul><li>1985 there were 1,960 companies </li></ul><ul><li>By 2005 there were more than 3,000ISPs in the USA and more than 15,000 world wide </li></ul><ul><li>For a fee, the ISP gives you a software package, a user name and password, and an access number to connect to the Internet </li></ul>
  5. 5. Introduction <ul><li>ISPs provide </li></ul><ul><ul><li>Virtual hosting ( virtual domain ):- a company with its own domain name, hosted by an ISP to conduct business via the internet. </li></ul></ul><ul><li>Domain name: a company’s identifier in cyberspace </li></ul><ul><li>Allow you to have your own domain name such as </li></ul><ul><li>Rather than using your ISPs domain name </li></ul><ul><li> </li></ul>
  6. 6. Introduction <ul><li>Most of MS to S organizations turn to ISPs for the following </li></ul><ul><ul><li>Companies need a full time stuff and webmaster to handle day to day changes and enhancement to the site </li></ul></ul><ul><ul><li>ISPs generally provide free management for websites, such as security, and backup </li></ul></ul><ul><ul><li>ISPs have high speed connectivity </li></ul></ul><ul><ul><ul><li>T1 and T3 lines to main Internet hubs </li></ul></ul></ul>
  7. 7. Introduction <ul><li>T1 line transmit long distance data at 1.5 megabits ( million bits) per second </li></ul><ul><li>T3 line with capability of transmitting 44.7 MBit per second </li></ul>
  8. 8. Introduction <ul><li>Most of MS to S organizations turn to ISPs for the following </li></ul><ul><ul><li>4. ISPs can handle real access and real physical security, from power supplies and air conditioning to network links </li></ul></ul><ul><ul><li>5. ISPs often have the latest technology for thousands of customers (cost) </li></ul></ul>
  9. 9. HOW ISPs WORK <ul><li>ISPs are cheaper, more reliable, and provide services that are difficult to match in house </li></ul><ul><li>To access web site, it has to be stored on a web server that is always connected to the Internet by a high-speed link, Infrastructure includes the following </li></ul><ul><ul><li>Standby Electric Power </li></ul></ul><ul><ul><ul><li>To keep the site available in the event of a blackout </li></ul></ul></ul><ul><ul><li>Redundant “Fault-Tolerant” Servers </li></ul></ul><ul><ul><ul><li>To ensure that your web site will continue in the event a hard drive or a server breaks down </li></ul></ul></ul>
  10. 10. HOW ISPs WORK <ul><li>Web Site Infrastructure </li></ul><ul><ul><li>3. Redundant Communications Lines </li></ul></ul><ul><ul><ul><li>To keep your site active in the event of phone line or a router goes down </li></ul></ul></ul><ul><ul><li>4. One or More Firewalls </li></ul></ul><ul><ul><ul><li>To protect your site from hackers and unauthorized access </li></ul></ul></ul>
  11. 11. TYPES OF SERVICE PROVIDERS <ul><li>Internet Service Provider (ISP) </li></ul><ul><li>Application Service Provider (ASP) </li></ul><ul><li>Business Service Provider (BSP) </li></ul><ul><li>Wholesale Service Provider (WSP) </li></ul><ul><li>Wireless Application Service provider (WASP) </li></ul>
  12. 12. TYPES OF SERVICE PROVIDERS <ul><li>Internet Service Provider </li></ul><ul><ul><li>Specialized company that connects customers with PCs and browser to the internet </li></ul></ul><ul><ul><li>Allow user to access the Internet via modem using a voice telephone network or directly via cables. </li></ul></ul><ul><ul><li>Provides an interface between the public phone system and Internet digital phone lines, which carry packets instead of voice conversation </li></ul></ul>
  13. 13. TYPES OF SERVICE PROVIDERS <ul><li>Application Service Provider </li></ul><ul><ul><li>A company that offers packaged software for lease online </li></ul></ul><ul><ul><li>Application renter </li></ul></ul><ul><ul><li>Focuses on high end application like database </li></ul></ul><ul><ul><ul><li>These applications are expensive, take a lot of time to install, and hard to manage </li></ul></ul></ul>
  14. 14. TYPES OF SERVICE PROVIDERS <ul><li>Business Service Provider (BSP) </li></ul><ul><ul><li>Internet service developer that rents only its own proprietary application via web </li></ul></ul><ul><ul><li>Generally the software is specific in function </li></ul></ul>
  15. 15. TYPES OF SERVICE PROVIDERS <ul><li>Wholesale Service Provider (WSP) </li></ul><ul><ul><li>Service provider that packages a selection of BSP application for distribution online </li></ul></ul><ul><ul><li>fall into one of three categories </li></ul></ul><ul><ul><ul><li>Large wholesale access provider </li></ul></ul></ul><ul><ul><ul><li>Smaller Internet backbone </li></ul></ul></ul><ul><ul><ul><li>Local ISPs </li></ul></ul></ul>
  16. 16. TYPES OF SERVICE PROVIDERS <ul><li>Wireless Application Service provider </li></ul><ul><ul><li>A company that offers untethered application </li></ul></ul><ul><ul><li>Responsibilities involve hosting, developing, and manage applications </li></ul></ul><ul><ul><li>WASP infrastructure require integration between the web and the wireless network </li></ul></ul><ul><ul><li>Deal with a wide range of hardware and mobile devices and wireless networking protocol </li></ul></ul>
  17. 17. TYPES OF WEB HOSTING SERVICES <ul><li>Web hosting : providing, managing, maintaining hardware, software, integrity, security, and reliable high speed Internet connection </li></ul><ul><li>Dial-Up Access </li></ul><ul><li>Developer’s Hosting : customer focused </li></ul><ul><li>Web Hosting: provides variety of services </li></ul><ul><li>Industrial Strength Hosting: more reliable </li></ul>
  18. 18. Packets, Routers, and Lines <ul><li>On the Net, Information is sent and receive in packets, which is small in size </li></ul><ul><li>Packets can take a different route across the Net </li></ul><ul><li>Packets may arrive at different time and different order. </li></ul>
  19. 19. Packets, Routers, and Lines <ul><li>Conversion from analog to digital and vice versa introduce noise, noise limits certain modem to 33,600bps. </li></ul><ul><li>If the packets coming from the ISP to the phone lines could remains digital all the way to the customer, data could be sent at 56K from to ISP to customer </li></ul><ul><li>The way to do this for customer is to get (ISDN) Integrated services digital network line from their phone company </li></ul>
  20. 20. The Connection <ul><li>When you dial into an ISP you dial into router owned by the ISP </li></ul><ul><li>Also ISP has a router connected to the larger ISP, this second router is the gateway to the Internet </li></ul>
  21. 21. HOW TO BECOME AN ISP <ul><li>ISPs have 3 major target market </li></ul><ul><li>Residential </li></ul><ul><ul><li>Fastest growing segment </li></ul></ul><ul><li>Commercial </li></ul><ul><ul><li>Included e-commerce and e-business </li></ul></ul><ul><ul><li>Most critical service to provide </li></ul></ul><ul><ul><ul><li>High level of quality </li></ul></ul></ul><ul><ul><ul><li>Dedicating connection </li></ul></ul></ul><ul><ul><ul><li>security </li></ul></ul></ul><ul><li>Public </li></ul><ul><ul><li>Like universities, schools, … </li></ul></ul>
  22. 22. ISP Services <ul><li>An ISP is expecting to provide the following </li></ul><ul><ul><li>Domain Name Service (DNS) </li></ul></ul><ul><ul><ul><li>A repository where the domain name for each ISP is stored </li></ul></ul></ul><ul><ul><li>E-mail </li></ul></ul><ul><ul><ul><li>The most commonly used service on the Internet </li></ul></ul></ul><ul><ul><ul><li>ISP must dedicated a separate server for e-mail </li></ul></ul></ul><ul><ul><ul><li>Key to consider mail storage capacity and maximum size for each user </li></ul></ul></ul>
  23. 23. AN ISP Services <ul><li>An ISP is expecting to provide the following </li></ul><ul><ul><li>Radius server </li></ul></ul><ul><ul><ul><li>A network access server that authenticates a user ID and password and trigger accounting to complete the customer chargeable session </li></ul></ul></ul><ul><ul><ul><li>The network access server forward request to this server database to authenticate a user Id and password, if the combination is valid the request is accepted, otherwise is rejected </li></ul></ul></ul>
  24. 24. ISP Services <ul><li>An ISP is expecting to provide the following </li></ul><ul><ul><li>WWW server </li></ul></ul><ul><ul><ul><li>Can be run on the same hardware as DNS, e-mail, and Radius system. </li></ul></ul></ul><ul><ul><li>FTP </li></ul></ul><ul><ul><ul><li>Accept connection form client trying to connect to its server </li></ul></ul></ul><ul><ul><li>Internet relay chat (IRC) </li></ul></ul><ul><ul><ul><li>Text-based chat service, where users connect to local server as part of a larger network of IRC servers </li></ul></ul></ul>
  25. 25. ISP Services <ul><li>An ISP is expecting to provide the following </li></ul><ul><ul><li>News server </li></ul></ul><ul><ul><ul><li>Internet network news is becoming more popular, because there is so much data traffic for news </li></ul></ul></ul><ul><ul><li>HTTP proxy service </li></ul></ul><ul><ul><ul><li>Generates and manages a local store of Internet objects such as web pages, images, or FTP and deliver the objects when requested (caching) </li></ul></ul></ul><ul><ul><ul><li>When a web page is requested, the proxy server examines its internal database to see if the page is store in the cache </li></ul></ul></ul><ul><ul><ul><li>Minimize data traffic, speed up request </li></ul></ul></ul>
  26. 26. Technical Services <ul><li>Local loop: </li></ul><ul><ul><li>the connection between the provider and the physical location </li></ul></ul><ul><ul><li>Cost depends on the size and distance from the provider and local telephone company central office. </li></ul></ul><ul><li>Several cable-based options are available, The include T1 and T3 lines, fiber optic, and number of server </li></ul>
  27. 27. Technical Services <ul><li>Broadband connection </li></ul><ul><ul><li>The Speed of the old dial-up service via modem </li></ul></ul><ul><ul><li>Broadband communication can carry multiple messages simultaneously over the same medium </li></ul></ul>
  28. 28. Broadband for home access <ul><li>Cable modem: </li></ul><ul><ul><li>First introduce in 1995 </li></ul></ul><ul><li>Digital subscriber line (DSL) </li></ul><ul><ul><li>Is ideal for homes that that are within four miles of central office </li></ul></ul><ul><ul><li>Speeds are rated at 50 times faster than cable modem </li></ul></ul><ul><li>Fiber-optic network </li></ul><ul><li>Wireless technology </li></ul>
  29. 29. HOW TO BECOME AN ISP <ul><li>Contract with a regional network providing with bandwidth </li></ul><ul><li>Procure a leased communications line to one of the company’s routers </li></ul><ul><li>Procure hardware and software to manage Internet communication </li></ul><ul><li>Set up dial-in lines to connect users </li></ul><ul><li>Maintain enough manpower to manage ISP traffic and deal with users </li></ul>
  30. 30. Factors in choosing an ISP <ul><li>Bandwidth </li></ul><ul><li>Connection availability </li></ul><ul><li>Customer volume and traffic </li></ul><ul><li>Traffic volume during peak hours </li></ul><ul><li>Virtual hosting feature </li></ul><ul><li>Capacity of e-mail box </li></ul><ul><li>Stability and staying power </li></ul><ul><li>Customer service and local support </li></ul><ul><li>Price </li></ul>
  31. 31. HOW TO CHOOSE AN ISP <ul><li>Bandwidth Size </li></ul><ul><ul><li>E.g. High-speed T1 and T3 lines </li></ul></ul><ul><li>Connection Availability and Performance </li></ul><ul><ul><li>Are the most important criteria in evaluating an ISP </li></ul></ul><ul><ul><li>Normal: 5 – 10MB </li></ul></ul><ul><li>Virtual Hosting </li></ul><ul><ul><li>Allow you to have your own domain name </li></ul></ul><ul><li>E-mail Aliases </li></ul><ul><ul><li>An ISP allows a certain number of e-mail addresses per account </li></ul></ul>
  32. 32. HOW TO CHOOSE AN ISP (cont.) <ul><li>Stability and Staying Power </li></ul><ul><ul><li>How often customers switch from one ISPs to another </li></ul></ul><ul><ul><li>Staying power: is the ISPs ability to continue to provide services. </li></ul></ul><ul><li>Local Access </li></ul><ul><ul><li>You need to know how many local access numbers an ISPs has and how they are a available to use </li></ul></ul><ul><li>Customer Service and Technical Support </li></ul><ul><ul><li>Does your ISPs have a 24-hour support line that you can call </li></ul></ul><ul><li>Reliability </li></ul><ul><ul><li>Delays, busy signals while trying to log on, or slow down </li></ul></ul><ul><ul><li>How quickly you can go online depends of the time of the day </li></ul></ul><ul><li>Price </li></ul>
  33. 33. ISP NEEDS FOR ONLINE MARKETING <ul><li>Register Domain Name </li></ul><ul><li>Capture and Forward E-mail </li></ul><ul><ul><li>Receiving and sending mail are important activities for an online merchant </li></ul></ul><ul><li>Host the Web site </li></ul><ul><li>Technical and Managerial Support </li></ul>
  34. 34. WHAT IS A DOMAIN NAME? <ul><li>Unique Internet address that represent a web site </li></ul><ul><li>Domain Name System (DNS) </li></ul><ul><ul><li>Web server that stores registered domain names and their numeric equivalents </li></ul></ul><ul><ul><li>translates between IP address and URL </li></ul></ul><ul><li>All web access traffic and IP addresses operates at TCP/IP layers </li></ul>
  35. 35. Domain Name <ul><li>To send a message to another computer on the internet the following steps are required </li></ul><ul><ul><li>Sending PC has unique IP address in the form where each of xxx is between 0 and 255 </li></ul></ul><ul><ul><li>TCP breaks the message into specific bits called packets, each packet has the sender’s IP address </li></ul></ul><ul><ul><li>IP Packets are sent to their destination via router with minimizing congestion </li></ul></ul><ul><ul><li>On the receiving end TCP check to make sure that all packets are assembled correctly to present the message </li></ul></ul>
  36. 36. HOW A MESSAGE IS BEING SENT? Sending PC Receiving PC Router Packets Packets Figure: TCP/IP and Message Transmission IP= IP= To: From:
  37. 37. Domain Name <ul><li>The company’s Web URL should be </li></ul><ul><ul><li>easy to remember </li></ul></ul><ul><ul><li>Present what the company is about </li></ul></ul>
  38. 38. How does a DOMAIN NAME work? <ul><li>URL has 3 major part </li></ul><ul><ul><li>http:// :- internet protocol and separator :// </li></ul></ul><ul><ul><li>www. :- The domain name </li></ul></ul><ul><ul><li>Subdirectory of the file / </li></ul></ul>
  39. 39. REGISTRATION CONSIDERATIONS <ul><li>One or two close names </li></ul><ul><li>Unique product domain name </li></ul><ul><li>Ideal company domain name </li></ul>
  40. 40. CYBER COMMANDMENTS OF WEB SITE DOMAIN NAMES <ul><li>When choosing domain name, legal implication must be consider </li></ul><ul><ul><li>Determine whether proposed domain name infringes any trademarks </li></ul></ul><ul><ul><li>Determine whether proposed domain name dilutes any famous marks </li></ul></ul><ul><ul><li>Obtain federal trademark registration of proposed domain name </li></ul></ul><ul><ul><li>Register proposed domain name with InterNIC </li></ul></ul><ul><ul><li>Get permission before linking to other Web sites </li></ul></ul><ul><ul><li>Watch for expanded top-level domain names and registries </li></ul></ul>
  41. 41. PITFALLS FOR USING AN ISP <ul><li>Overcharging </li></ul><ul><li>Domain Name Status </li></ul><ul><li>Backup </li></ul><ul><li>Contractual Language </li></ul>
  42. 42. FREQUENTLY ASKED QUESTIONS <ul><li>What is involved in registering a domain name in .com, .net or .org? </li></ul><ul><li>How long does a registration last? Can it be renewed? </li></ul><ul><li>Can one change registrars after registering a domain name? </li></ul>
  43. 43. Application service Provider ( ASP) <ul><li>Consists of two unique service components </li></ul><ul><li>Website hosting and delivery </li></ul><ul><li>Application technical support : providing end-to-end connectivity support </li></ul>
  44. 44. Application service Provider ( ASP) <ul><li>Most features of ASP </li></ul><ul><ul><li>Owns and operates a software application </li></ul></ul><ul><ul><li>Owns, operates, and maintains the servers that run application </li></ul></ul><ul><ul><li>Employ the staff that to maintain the application </li></ul></ul><ul><ul><li>Makes the application available to customer everywhere via internet </li></ul></ul>
  45. 45. Chapter 6 Internet Service Providers— Hosting Your Web Site