1 Chapter 6 Internet Service Providers Hosting Your Web Site

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Chapter 6Chapter 6Internet Service Internet Service

ProvidersProvidersHosting Your Web Hosting Your Web

SiteSite

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OBJECTIVESOBJECTIVES

How ISPs WorkHow ISPs Work How to Choose an ISPHow to Choose an ISP How to Choose and Register How to Choose and Register

Your Domain NameYour Domain Name

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IntroductionIntroduction

Before you complete the design of Before you complete the design of web site, you need to find a way to web site, you need to find a way to put it on the Internet. put it on the Internet.

Internet Service Provider Internet Service Provider A specialized company that connects A specialized company that connects

customers with PCs and browsers to the customers with PCs and browsers to the InternetInternet

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1969 only four hosting company exist1969 only four hosting company exist 1985 there were 1,960 companies1985 there were 1,960 companies By 2005 there were more than 3,000ISPs By 2005 there were more than 3,000ISPs

in the USA and more than 15,000 world in the USA and more than 15,000 world wide wide

For a fee, the ISP gives you a software For a fee, the ISP gives you a software package, a user name and password, and package, a user name and password, and an access number to connect to the an access number to connect to the Internet Internet

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ISPs provideISPs provide Virtual hosting ( virtual domain ):- a company Virtual hosting ( virtual domain ):- a company

with its own domain name, hosted by an ISP to with its own domain name, hosted by an ISP to conduct business via the internet.conduct business via the internet.

Domain name: a company’s identifier in Domain name: a company’s identifier in cyberspacecyberspace

Allow you to have your own domain name Allow you to have your own domain name such as such as www.yourcompany.comwww.yourcompany.com

Rather than using your ISPs domain nameRather than using your ISPs domain name www.isp.com/yourcomany/www.isp.com/yourcomany/

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Most of MS to S organizations turn to Most of MS to S organizations turn to ISPs for the followingISPs for the following

1.1. Companies need a full time stuff and Companies need a full time stuff and webmaster to handle day to day changes webmaster to handle day to day changes and enhancement to the siteand enhancement to the site

2.2. ISPs generally provide free management ISPs generally provide free management for websites, such as security, and for websites, such as security, and backupbackup

3.3. ISPs have high speed connectivityISPs have high speed connectivityT1 and T3 lines to main Internet hubs T1 and T3 lines to main Internet hubs

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T1 line transmit long distance T1 line transmit long distance data at 1.5 megabits ( million data at 1.5 megabits ( million bits) per secondbits) per second

T3 line with capability of T3 line with capability of transmitting 44.7 MBit per transmitting 44.7 MBit per secondsecond

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Most of MS to S organizations turn Most of MS to S organizations turn to ISPs for the followingto ISPs for the following

4. ISPs can handle real access and real 4. ISPs can handle real access and real physical security, from power supplies physical security, from power supplies and air conditioning to network links and air conditioning to network links

5. ISPs often have the latest technology for 5. ISPs often have the latest technology for thousands of customers (cost)thousands of customers (cost)

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HOW ISPs WORKHOW ISPs WORK ISPs are cheaper, more reliable, and ISPs are cheaper, more reliable, and

provide services that are difficult to provide services that are difficult to match in house match in house

To access web site, it has to be stored on To access web site, it has to be stored on a web server that is always connected to a web server that is always connected to the Internet by a high-speed link, the Internet by a high-speed link, Infrastructure includes the followingInfrastructure includes the following

1.1. Standby Electric PowerStandby Electric Power To keep the site available in the event of a To keep the site available in the event of a

blackoutblackout

2.2. Redundant “Fault-Tolerant” ServersRedundant “Fault-Tolerant” Servers To ensure that your web site will continue in the To ensure that your web site will continue in the

event a hard drive or a server breaks down event a hard drive or a server breaks down

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HOW ISPs WORKHOW ISPs WORK Web Site InfrastructureWeb Site Infrastructure

3. Redundant Communications Lines3. Redundant Communications Lines To keep your site active in the event of To keep your site active in the event of

phone line or a router goes down phone line or a router goes down

4. One or More Firewalls4. One or More Firewalls To protect your site from hackers and To protect your site from hackers and

unauthorized accessunauthorized access

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TYPES OF SERVICE TYPES OF SERVICE PROVIDERSPROVIDERS

Internet Service Provider (ISP)Internet Service Provider (ISP) Application Service Provider (ASP)Application Service Provider (ASP) Business Service Provider (BSP)Business Service Provider (BSP) Wholesale Service Provider (WSP)Wholesale Service Provider (WSP) Wireless Application Service provider (WASP)Wireless Application Service provider (WASP)

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Internet Service ProviderInternet Service Provider Specialized company that connects customers Specialized company that connects customers

with PCs and browser to the internetwith PCs and browser to the internet Allow user to access the Internet via modem Allow user to access the Internet via modem

using a voice telephone network or directly via using a voice telephone network or directly via cables.cables.

Provides an interface between the public phone Provides an interface between the public phone system and Internet digital phone lines, which system and Internet digital phone lines, which carry packets instead of voice conversation carry packets instead of voice conversation

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Application Service ProviderApplication Service Provider A company that offers packaged A company that offers packaged

software for lease onlinesoftware for lease online Application renterApplication renter Focuses on high end application like Focuses on high end application like

database database These applications are expensive, take a lot These applications are expensive, take a lot

of time to install, and hard to manage of time to install, and hard to manage

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Business Service Provider (BSP)Business Service Provider (BSP) Internet service developer that rents only Internet service developer that rents only

its own proprietary application via webits own proprietary application via web Generally the software is specific in Generally the software is specific in

functionfunction

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Wholesale Service Provider (WSP)Wholesale Service Provider (WSP) Service provider that packages a Service provider that packages a

selection of BSP application for selection of BSP application for distribution onlinedistribution online

fall into one of three categories fall into one of three categories 1.1. Large wholesale access provider Large wholesale access provider

2.2. Smaller Internet backbone Smaller Internet backbone

3.3. Local ISPsLocal ISPs

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Wireless Application Service provider Wireless Application Service provider A company that offers untethered A company that offers untethered

applicationapplication Responsibilities involve hosting, Responsibilities involve hosting,

developing, and manage applicationsdeveloping, and manage applications WASP infrastructure require integration WASP infrastructure require integration

between the web and the wireless between the web and the wireless networknetwork

Deal with a wide range of hardware and Deal with a wide range of hardware and mobile devices and wireless networking mobile devices and wireless networking protocol protocol

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TYPES OF WEB HOSTING TYPES OF WEB HOSTING SERVICESSERVICES

Web hosting : providing, managing, Web hosting : providing, managing, maintaining hardware, software, maintaining hardware, software, integrity, security, and reliable high integrity, security, and reliable high speed Internet connectionspeed Internet connection

1.1. Dial-Up AccessDial-Up Access

2.2. Developer’s Hosting : customer focused Developer’s Hosting : customer focused

3.3. Web Hosting: provides variety of services Web Hosting: provides variety of services

4.4. Industrial Strength Hosting: more Industrial Strength Hosting: more reliable reliable

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Packets, Routers, and Packets, Routers, and Lines Lines

On the Net, Information is sent and On the Net, Information is sent and receive in packets, which is small in sizereceive in packets, which is small in size

Packets can take a different route across Packets can take a different route across the Netthe Net

Packets may arrive at different time and Packets may arrive at different time and different order. different order.

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Packets, Routers, and Packets, Routers, and Lines Lines

Conversion from analog to digital and vice Conversion from analog to digital and vice versa introduce noise, noise limits certain versa introduce noise, noise limits certain modem to 33,600bps.modem to 33,600bps.

If the packets coming from the ISP to the If the packets coming from the ISP to the phone lines could remains digital all the phone lines could remains digital all the way to the customer, data could be sent at way to the customer, data could be sent at 56K from to ISP to customer56K from to ISP to customer

The way to do this for customer is to get The way to do this for customer is to get (ISDN) Integrated services digital network (ISDN) Integrated services digital network line from their phone company line from their phone company

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The ConnectionThe Connection

When you dial into an ISP you dial into When you dial into an ISP you dial into router owned by the ISProuter owned by the ISP

Also ISP has a router connected to the Also ISP has a router connected to the larger ISP, this second router is the larger ISP, this second router is the gateway to the Internetgateway to the Internet

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HOW TO BECOME AN ISPHOW TO BECOME AN ISP

ISPs have 3 major target market ISPs have 3 major target market

1.1. ResidentialResidentialFastest growing segmentFastest growing segment

2.2. CommercialCommercialIncluded e-commerce and e-business Included e-commerce and e-business

Most critical service to provide Most critical service to provide High level of qualityHigh level of quality

Dedicating connectionDedicating connection

securitysecurity

3.3. Public Public Like universities, schools, …Like universities, schools, …

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ISP ServicesISP Services

An ISP is expecting to provide the An ISP is expecting to provide the following following

Domain Name Service (DNS)Domain Name Service (DNS) A repository where the domain name for each ISP is A repository where the domain name for each ISP is

storedstored E-mailE-mail

The most commonly used service on the InternetThe most commonly used service on the Internet ISP must dedicated a separate server for e-mailISP must dedicated a separate server for e-mail Key to consider mail storage capacity and maximum Key to consider mail storage capacity and maximum

size for each usersize for each user

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AN ISP ServicesAN ISP Services


Radius serverRadius server A network access server that authenticates a A network access server that authenticates a

user ID and password and trigger accounting to user ID and password and trigger accounting to complete the customer chargeable session complete the customer chargeable session

The network access server forward request to The network access server forward request to this server database to authenticate a user Id this server database to authenticate a user Id and password, if the combination is valid the and password, if the combination is valid the request is accepted, otherwise is rejected request is accepted, otherwise is rejected

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WWW serverWWW server Can be run on the same hardware as DNS, e-mail, Can be run on the same hardware as DNS, e-mail,

and Radius system.and Radius system. FTPFTP

Accept connection form client trying to connect to Accept connection form client trying to connect to its server its server

Internet relay chat (IRC)Internet relay chat (IRC) Text-based chat service, where users connect to Text-based chat service, where users connect to

local server as part of a larger network of IRC local server as part of a larger network of IRC servers servers

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News serverNews server Internet network news is becoming more popular, Internet network news is becoming more popular,

because there is so much data traffic for news because there is so much data traffic for news HTTP proxy serviceHTTP proxy service

Generates and manages a local store of Internet Generates and manages a local store of Internet objects such as web pages, images, or FTP and objects such as web pages, images, or FTP and deliver the objects when requested (caching)deliver the objects when requested (caching)

When a web page is requested, the proxy server When a web page is requested, the proxy server examines its internal database to see if the page is examines its internal database to see if the page is store in the cache store in the cache

Minimize data traffic, speed up request Minimize data traffic, speed up request

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Technical ServicesTechnical Services

Local loop:Local loop: the connection between the provider and the connection between the provider and

the physical location the physical location Cost depends on the size and distance Cost depends on the size and distance

from the provider and local telephone from the provider and local telephone company central office.company central office.

Several cable-based options are Several cable-based options are available, The include T1 and T3 lines, available, The include T1 and T3 lines, fiber optic, and number of server fiber optic, and number of server

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Technical ServicesTechnical Services

Broadband connectionBroadband connection The Speed of the old dial-up service via The Speed of the old dial-up service via

modem modem Broadband communication can carry Broadband communication can carry

multiple messages simultaneously over multiple messages simultaneously over the same medium the same medium

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Broadband for home Broadband for home access access

1.1. Cable modem: Cable modem: First introduce in 1995First introduce in 1995

2.2. Digital subscriber line (DSL)Digital subscriber line (DSL) Is ideal for homes that that are within Is ideal for homes that that are within

four miles of central office four miles of central office Speeds are rated at 50 times faster Speeds are rated at 50 times faster

than cable modem than cable modem

3.3. Fiber-optic networkFiber-optic network4.4. Wireless technology Wireless technology

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HOW TO BECOME AN ISPHOW TO BECOME AN ISP

Contract with a regional network providing Contract with a regional network providing with bandwidthwith bandwidth

Procure a leased communications line to one Procure a leased communications line to one of the company’s routersof the company’s routers

Procure hardware and software to manage Procure hardware and software to manage Internet communicationInternet communication

Set up dial-in lines to connect usersSet up dial-in lines to connect users Maintain enough manpower to manage ISP Maintain enough manpower to manage ISP

traffic and deal with userstraffic and deal with users

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Factors in choosing an Factors in choosing an ISPISP

1.1. BandwidthBandwidth2.2. Connection availabilityConnection availability3.3. Customer volume and trafficCustomer volume and traffic4.4. Traffic volume during peak hoursTraffic volume during peak hours5.5. Virtual hosting featureVirtual hosting feature6.6. Capacity of e-mail boxCapacity of e-mail box7.7. Stability and staying powerStability and staying power8.8. Customer service and local supportCustomer service and local support9.9. Price Price

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HOW TO CHOOSE AN HOW TO CHOOSE AN ISPISP

Bandwidth SizeBandwidth Size E.g. High-speed T1 and T3 linesE.g. High-speed T1 and T3 lines

Connection Availability and PerformanceConnection Availability and Performance Are the most important criteria in Are the most important criteria in

evaluating an ISPevaluating an ISP Normal: 5 – 10MB Normal: 5 – 10MB

Virtual HostingVirtual Hosting Allow you to have your own domain name Allow you to have your own domain name

E-mail AliasesE-mail Aliases An ISP allows a certain number of e-mail An ISP allows a certain number of e-mail

addresses per account addresses per account

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HOW TO CHOOSE AN ISP HOW TO CHOOSE AN ISP (cont.)(cont.)

Stability and Staying PowerStability and Staying Power How often customers switch from one ISPs to anotherHow often customers switch from one ISPs to another Staying power: is the ISPs ability to continue to Staying power: is the ISPs ability to continue to

provide services. provide services. Local AccessLocal Access

You need to know how many local access numbers an You need to know how many local access numbers an ISPs has and how they are a available to use ISPs has and how they are a available to use

Customer Service and Technical SupportCustomer Service and Technical Support Does your ISPs have a 24-hour support line that you Does your ISPs have a 24-hour support line that you

can callcan call ReliabilityReliability

Delays, busy signals while trying to log on, or slow Delays, busy signals while trying to log on, or slow down down

How quickly you can go online depends of the time of How quickly you can go online depends of the time of the daythe day

PricePrice

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ISP NEEDS FOR ONLINE ISP NEEDS FOR ONLINE MARKETINGMARKETING

Register Domain NameRegister Domain Name Capture and Forward E-mailCapture and Forward E-mail

Receiving and sending mail are important activities Receiving and sending mail are important activities for an online merchant for an online merchant

Host the Web siteHost the Web site Technical and Managerial SupportTechnical and Managerial Support

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WHAT IS A DOMAIN WHAT IS A DOMAIN NAME?NAME?

Unique Internet address that represent Unique Internet address that represent a web sitea web site

Domain Name System (DNS)Domain Name System (DNS) Web server that stores registered domain Web server that stores registered domain

names and their numeric equivalents names and their numeric equivalents translates between IP address and URLtranslates between IP address and URL

All web access traffic and IP addresses All web access traffic and IP addresses operates at TCP/IP layers operates at TCP/IP layers

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Domain NameDomain Name To send a message to another computer To send a message to another computer

on the internet the following steps are on the internet the following steps are requiredrequired

1.1. Sending PC has unique IP address in the Sending PC has unique IP address in the form xxx.xxx.xxx.xxx where each of xxx is form xxx.xxx.xxx.xxx where each of xxx is between 0 and 255between 0 and 255

2.2. TCP breaks the message into specific bits TCP breaks the message into specific bits called packets, each packet has the called packets, each packet has the sender’s IP address sender’s IP address

3.3. IP Packets are sent to their destination via IP Packets are sent to their destination via router with minimizing congestion router with minimizing congestion

4.4. On the receiving end TCP check to make On the receiving end TCP check to make sure that all packets are assembled sure that all packets are assembled correctly to present the message correctly to present the message

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HOW A MESSAGE IS BEING HOW A MESSAGE IS BEING SENT?SENT?

Sending PC

Receiving PCRouter

Packets Packets

Figure: TCP/IP and Message Transmission

IP=112.134.54.51 IP=231.131.154.12

To: 231.131.154.12From:112.134.54.51

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Domain NameDomain Name

The company’s Web URL should be The company’s Web URL should be easy to remembereasy to remember Present what the company is about Present what the company is about

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How does a DOMAIN How does a DOMAIN NAME work?NAME work?

URL has 3 major partURL has 3 major part http:// :- internet protocol and separator ://http:// :- internet protocol and separator :// www. Name.xxx :- The domain name www. Name.xxx :- The domain name Subdirectory of the file / Subdirectory of the file /

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REGISTRATION REGISTRATION CONSIDERATIONSCONSIDERATIONS

One or two close namesOne or two close names Unique product domain nameUnique product domain name Ideal company domain nameIdeal company domain name

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CYBER CYBER COMMANDMENTS OF COMMANDMENTS OF

WEB SITE DOMAIN WEB SITE DOMAIN NAMESNAMES When choosing domain name, legal When choosing domain name, legal

implication must be consider implication must be consider Determine whether proposed domain name Determine whether proposed domain name

infringes any trademarksinfringes any trademarks Determine whether proposed domain name Determine whether proposed domain name

dilutes any famous marksdilutes any famous marks Obtain federal trademark registration of Obtain federal trademark registration of

proposed domain nameproposed domain name Register proposed domain name with InterNICRegister proposed domain name with InterNIC Get permission before linking to other Web sitesGet permission before linking to other Web sites Watch for expanded top-level domain names and Watch for expanded top-level domain names and

registriesregistries

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PITFALLS FOR USING PITFALLS FOR USING AN ISPAN ISP

OverchargingOvercharging Domain Name StatusDomain Name Status BackupBackup Contractual LanguageContractual Language

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FREQUENTLY ASKED FREQUENTLY ASKED QUESTIONSQUESTIONS

What is involved in registering a What is involved in registering a domain name in .com, .net or .org?domain name in .com, .net or .org?

How long does a registration last? How long does a registration last? Can it be renewed?Can it be renewed?

Can one change registrars after Can one change registrars after registering a domain name?registering a domain name?

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Application service Provider Application service Provider ( ASP)( ASP)

Consists of two unique service Consists of two unique service componentscomponents

1.1. Website hosting and delivery Website hosting and delivery

2.2. Application technical support : providing Application technical support : providing end-to-end connectivity supportend-to-end connectivity support

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Application service Provider Application service Provider ( ASP)( ASP)

Most features of ASPMost features of ASP1.1. Owns and operates a software applicationOwns and operates a software application

2.2. Owns, operates, and maintains the servers Owns, operates, and maintains the servers that run applicationthat run application

3.3. Employ the staff that to maintain the Employ the staff that to maintain the applicationapplication

4.4. Makes the application available to Makes the application available to customer everywhere via internetcustomer everywhere via internet

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Chapter 6Chapter 6

Internet Service Internet Service Providers—Providers—

Hosting Your Web Hosting Your Web SiteSite

Documents

1 Chapter 6 Internet Service Providers Hosting Your Web Site