Origin of intranetintra- + net (noun), after Internet
A local network of computers that only people in a particular office can access is an example of an intranet.
intranet - Computer Definition
A private network based on the TCP/IP protocol suite and designed to provide access to information resources within a company, university, or other organization. Designed to look much like a site on a private World Wide Web (WWW) and based on the same protocols, an intranet supports familiar client/server software such as browsers and e-mail. Intranets can be used for communications to and between employees to advise them of company policies, job postings, company events, product literature, press releases, and so on. On a password-protected basis, privileged users can access sensitive internal company information, including customer billing records and network usage data. Intranets support the transmission of images, video clips, and sound clips, as well as textual information. Hypertext links can be included to hot link to other sites and databases. An intranet can be confined to a campus environment or can extend across the wide area to link together multiple, geographically dispersed locations. Access from an intranet to the wider public Internet is possible through a security firewall. Extranets are intranets opened to select groups of users outside the company. See also browser, database, e-mail, extranet, firewall, hypertext, Internet, protocol, protocol suite, TCP/IP, and WWW.
An inhouse website that serves employees only, and most medium-sized and large companies have one. Although intranet pages may have links to websites on the Internet, the intranet is not exposed to, or is accessed by, the general public. It provides a standard way to publish company policy, news, schedules, medical and insurance forms and training manuals. The intranet is also a venue for publishing blogs, wikis and social activities such as sports and exercise schedules. Since the Web browser is the primary interface, intranets offer cross-platform support between Windows, Mac and Linux desktops. An Internal Web Intranets use the same HTTP server (Web server) technology, protocols and hypertext links as the public Web. Like all the organization's internal databases, the intranet server resides within the local network (LAN) inside the firewall and fortified from the outside world. See HTTP, firewall and LAN. A Tongue Twister For anyone discussing intranets, the terms intra-net and Inter-net must be pronounced very carefully to avoid confusion. The term was more popular in the mid-1990s, but it is still used. Contrast with extranet. See LAN, website, Web server and Internet.