Domain & Shared hosting

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Domain & Shared hosting

  1. 1. Domain & Shared Hosting
  2. 2. DomainA domain name is essentially the address of a person or anorganization on the Internet. It is where other people can findyou on line, and can also become your online identity.For example, businesses typically register domain names withtheir company name and sometimes also register their productnames. Individuals often register family names or other namesthat have personal meaning.•TLD(Top Level Domain)(.com, . net, .org)•ccTLDs (Country Code Top Level Domain)(.kw, DE, .CN, .JP,and .UK)
  3. 3. What is a domain name and how does it work? Every computer on the public Internet has a unique numeric address—similar to the uniqueness of a telephone number— which is a string of numbers that is difficult for most people to remember. This string is called the “IP address.” IP stands for “Internet Protocol.” To make it easier to find a given location on the Internet, the Domain Name System, or DNS, was invented. The DNS translates IP addresses into unique alphanumeric addresses called domain names that are easier to remember. If, for example, you would like to visit the ICANN website, would you rather remember the IP address 192.0.34.163, or type “www.icann.org”? By associating a familiar string of letters—the domain name—with an IP address, the DNS makes it much easier for Internet users to remember websites and email addresses. In the example above, the “icann.org” part of the address is called the domain name. The “www.” part identifies to your browser that you are looking for the World Wide Web
  4. 4.  Domain names can also be used to send email. Whether you are sending business or personal communications, you want to be certain that your message is directed to the intended addressee. The DNS works in a similar way. Both the domain name and the IP address behind it are unique. The DNS enables your email to reach the intended recipient (guide2dns@icann.org, for example) and not someone else with a similar domain name. It also enables you to type ww.icann.org,” without having to enter a lengthy IP address, and get to the right website. Without this uniqueness, both the DNS and the telephone systems would be less predictable and reliable. A domain name can remain unchanged even if a website is moved to a different host computer or server because the DNS can be told to point an existing domain name to a new IP address. This is just like a household or a business moving its location—the family or business name stays the same, even if the street address changes.
  5. 5. ICANN The Internet Corporation for Assigned Names and Numbers (ICANN)is a nonprofit private organization headquartered in Los Angeles, California, United States, that was created on September 18, 1998, and incorporated on September 30, 1998 to oversee a number of Internet-related tasks previously performed directly on behalf of the U.S. government by other organizations, notably the Internet Assigned Numbers Authority (IANA), which ICANN now operates. ICANN is responsible for the coordination of the global Internets systems of unique identifiers and, in particular, ensuring its stable and secure operation. This work includes coordination of the Internet Protocol address spaces (IPv4 and IPv6) and assignment of address blocks to regional Internet registries, for maintaining registries of Internet protocol identifiers, and for the management of the top-level domain name space (DNS root zone), which includes the operation of root name servers.
  6. 6. Shared HostingA shared web hosting service refers to a web hosting servicewhere many websites reside on one Web Server connected tothe Internet. Each site "sits" on its own partition, or section/placeon the server, to keep it separate from other sites.Shared hosting typically uses a web-based control panel system,such as cPanel, DirectAdmin, Plesk, InterWorx, H-Sphere or oneof many other control panel products.In shared hosting, the provider is generally responsible formanaging servers, installing server software, security updates,technical support, and other aspects of the service. Most serversare based on the Linux operating system and LAMP (softwarebundle), which is driven by the reliability and security of opensource software such as Linux and Apache (the L and A ofLAMP).
  7. 7.  Understanding DNS and Name Servers DNS stands for "Domain Name Server." The domain name server acts like a large telephone directory and in that its the master database, which associates a domain name such as (http://www.mydomain.com) with the appropriate IP number. Consider the IP number something similar to a phone number: When someone calls http://www.mydomain.com, your ISP looks at the DNS server, and asks "how do I contact http://www.mydomain.com ?" The DNS server responds, for example, it can be found at: 216.198.221.66. As the Internet understands it, this can be considered the phone number for the server, which houses the http://www.mydomain.com web site. When you register/purchase your domain name on a particular "registrars name server", your DNS settings are kept on their server, and in most cases point your domain to the Name Server of your hosting provider. This Name Server is where the IP number (currently associated with your domain name) resides.
  8. 8.  Features• This is generally the most economical option for hosting, as many people share the overall cost of server maintenance.• The hosting service must include system administration since it is shared by many users; this is a benefit for users who do not want to deal with it.
  9. 9. Thank You!!
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