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Intranets and Extranets


Intranets (mini private internets)

An intranet is a private network that is only accessible to limited group of users, for instance the Employees of company or members of a scout group.

They are used for :

  • Sharing hardware resources ( such as printers, scanners, etc)
  • Allowing users to access their files from multiple locations.
  • File sharing within the company.
  • Company wide file backup

Advantages of Intranets

  • Files can be shared within a company that you don’t outsiders to see ( employee records, new product information)
  • Intranet sites ( websites only available inside an intranet) often run faster than external sites.
  • Expensive hardware like printers can be shared, so you don’t need a printer for each user.
  • Technically difficult tasks such as automated backups can be performed by one person, who backs up everyone’s files.




Extranets are a small portion of an intranet available externally to authorised users.