Extranet is a network or internetwork, is limited to a single organization or entity, but also has limited connections to the networks of one or more other usually, but not necessarily, trusted organizations or entities (eg customers of the company may be provides access to a portion of its intranet creating in this way an extranet, while customers can not be regarded as “trust” in terms of security). Technically, an extranet can be categorized as a box, MAN, WAN, or other type of network, although by definition an extranet existence of a local network, it at least one network connection to the outside world.