An extranet's a private network that uses Internet protocols, network connectivity, and possibly the public telecommunication system to securely share part of an organization's information or operations with suppliers, vendors, partners, customers or other businesses. An extranet can be viewed as part of a company's intranet that's extended to users outside the company (for example: normally over the Internet). It's also been described as a "state of mind" in which the Internet's perceived as a… (More on Extranet)