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extranet
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Definition: An extranet is a computer network that allows controlled access from the outside for specific business or educational purposes. Extranets are extensions to, or segments of, private intranet networks that have been built in many corporations for information sharing and ecommerce.

 Related Terms
• Ethernet
• intranet
• portal
• VPN
• WAN  
 

Most extranets use the Internet as the entry point for outsiders, a firewall configuration to limit access, and a secure protocol for authenticating users.

Related Resources:

Extranet Resources
Find out how to build and manage an extranet, see examples of succesful extranets in case studies, and discover the past and future of extranet networks.

Intranet Resources
Learn about building an intranet, content management, knowledge management, and hosting/outsourcing possibilities.

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