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An extranet is a controlled private computer network that allows communication with business partners, vendors and suppliers or an authorized set of customers. It extends intranet to trusted outsiders. It provides access to needed services for authorized parties, without granting access to an organization's entire network.
Larger businesses allow users within their intranet to access public internet through firewall servers. They have the ability to screen incoming and outgoing messages, keeping security intact. When part of an intranet is made accessible to customers and others outside the business, it becomes part of an extranet.
An intranet is an access-restricted network used internally in an organization. An intranet uses the same concepts and technologies as the World Wide Web and Internet . This includes web browsers and servers running on the internet protocol suite and using Internet protocols such as FTP , TCP/IP , HTML , and Simple Mail Transfer Protocol (SMTP).
An extranet is an extension of an intranet that allows secure communications to users outside of the intranet (e.g. business partners, customers). [ 84 ] Unofficially, the Internet is the set of users, enterprises, and content providers that are interconnected by Internet Service Providers (ISP).
Context-based access control (CBAC) is a feature of firewall software, which intelligently filters TCP and UDP packets based on application layer protocol session information. . It can be used for intranets, extranets and interne
The terms intranet and extranet both relate to a demarcation line of a private network boundary, implementing some kind of security feature, usually. Access to a resource within, is on the intranet, from outside it's on the extranet. Kbrose 18:07, 29 January 2010 (UTC)
Network Enclaves consist of standalone assets that do not interact with other information systems or networks. A major difference between a DMZ or demilitarized zone and a network enclave is a DMZ allows inbound and outbound traffic access, where firewall boundaries are traversed.
In network security a screened subnet refers to the use of one or more logical screening routers as a firewall to define three separate subnets: an external router (sometimes called an access router), that separates the external network from a perimeter network, and an internal router (sometimes called a choke router) that separates the ...