Friday, February 13, 2009

Intranet and Extranet..

Intranet is a Web site or group of sites belonging to an organization, accessible only by the members of the organization.

Internet standards for exchanging e-mail and publishing Web pages are becoming increasingly popular for business use within closed networks called intranets. Typically, an internet is connected to the winder public internet through a firewall. With restrictions imposed on the types of information that can pass into and out of the internet.

Extranet is an internet that is partially accessible to authorized outsiders.

Whereas an internet resides behind a firewall and is accessible only to people who are members of the same organization, an extranet provides various levels of accessibility to outsiders. Typically, an extranet can be accessed only if the outsider has a valid username and password, and this identity determines which parts of the extranet can be viewed. Extranets are becoming a very popular means for business partners to exchange information.

In contrast, implementing an extranet is relatively simple. It uses standard internet components : a Web server, a browser or applet-based application, and the internet itself as a communications infrastructure. In addition, the extranet allows organizations to provide information about themselves as product for their customers.

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