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Ex 1.3.1.4 - Understand what an intranet, extranet is |
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| KNOWLEDGE | ||
| INTRANET | ||
| An Intranet is a network of computers that
physically exists within a given organisation
where information can be exchanged using Internet technology (TCP/IP
protocols). TCP/IP protocols (as used on the Internet) are used to create a network of computers which are accessible only by the organisation's employees. An intranet's Web site looks and acts just like any other Web site. However, the intranet will have a firewall (specialist software/hardware) connected to it in order to prevent unauthorised access. Like the Internet itself, intranets are used to share information. Secure intranets are much less expensive to build and manage than private networks based on proprietary protocols and as such are used extensively by organisations. |
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| EXTRANET | ||
| An Extranet is similar to an Intranet in that it is also a network of computers of a given organisation where information can be exchanged using Internet technology. An Extranets' computers however may be all over the world and access may be given to view part of the network to authorised users outside of the main network. Whereas an intranet resides behind a firewall and is accessible only to people who are members of the same company or organisation, an extranet provides various levels of accessibility to outsiders. To access an extranet you will need a valid username and password. Depending on how the system is set up you will then be allowed access to pre-determined parts of the extranet. | ||
| FURTHER INFORMATION | ||
| To read further information about the topic(s) discussed in this exercise try visiting the following web site(s): www.bbc.co.uk/webwise - Online Course/Welcome |
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