Network access server: Difference between revisions

Revision as of 05:08, 15 January 2014

Revision as of 15:04, 22 May 2015

Line 3:

==Overview==

Concentrates [[dial-in]] and [[dial-out]] user communications. An access server may have a mixture of analog and digital interfaces and support hundreds of simultaneous users.

CommunicationsA [[communications processor]] that connects asynchronous devices to a [[LAN]] or [[Wide area network|WAN]] through network and [[terminal emulation]] software. Performs both synchronous and asynchronous routing of supported protocols. Sometimes called a network access server (NAS).

The NAS is meant to act as a [[Gateway (telecommunications)|gateway]] to guard access to a protected resource. This can be anything from a [[telephone]] [[Telecommunications network|network]], to [[computer printer|printers]], to the [[Internet]].

The [[Client (computing)|client]] connects to the NAS. The NAS then connects to another resource asking whether the client's supplied [[credentials]] are valid. Based on that answer the NAS then allows or disallows access to the protected resource.

==Examples==