Internet service provider
An Internet service provider (ISP, also called Internet access provider or IAP) is a company which offers their customers access to the Internet. The ISP connects to its customers using a data transmission technology appropriate for delivering Internet Protocol datagrams, such as dial-up, DSL, cable modem or dedicated high-speed interconnects.
ISPs may provide Internet e-mail accounts to users which allow them to communicate with one another by sending and receiving electronic messages through their ISPs' servers. ISPs may provide other services such as remotely storing data files on behalf of their customers, as well as other services unique to each particular ISP.
Most ISPs can be broken down into two categories:
- Those who cater to individual dial-up customers—These ISPs tend to offer a full package of Internet user services, including an e-mail account and a Web site. One downside to using this type of service is the use of dynamic IP addressing, which gives you a different IP address every time you log on to the service. Also, some of the providers charge as much as $2.50 for every hour you are online.
- Those who cater to commercial and leased-line customers—These ISPs tend to offer fewer user services and a more technical level of LAN-to-Internet connection. One downside to using this type of service is that you do not usually have the use of your ISP's Web and mail servers, with the possible exception of a few administrative e-mail accounts.
ISP Services :-
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Broadband access
§ Fixed wireless access
§ Cable
§ Triple play
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Internet Hosting
Services
§ Web hosting services
§ E-mail hosting services
§ DNS hosting services
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Dynamic DNS
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