Network Access Server (NAS)


Definition of NAS (Network Access Server) in the Network Encyclopedia.

What is NAS (Network Access Server)?

Network Access Server, or simply NAS, is a general name for a server at an Internet service provider (ISP) that a dial-up client connects to in order to establish a Point-to-Point Protocol (PPP) connection. Network access servers (NAS’s) provide dial-up entry points for PPP clients to connect to the Internet.

Network Access Server (NAS)
Network Access Server (NAS)

They can also be used to tunnel through the Internet to establish a virtual private network (VPN) using the Point-to-Point Tunneling Protocol (PPTP). Another name for a NAS is a point of presence (POP) server.



The NAS is typically responsible for authenticating the dial-up client’s credentials and negotiating flow control and error correction. NAS’s can be general-purpose server computers running specialized NAS software such as Internet Connection Services for Microsoft Remote Access Service (RAS), or they can simply be routers with support for a built-in PPP connection, which are often called access servers.

External references:




Editor

Articles posted after being checked by editors.

Recent Content

link to Named Pipe

Named Pipe

Named Pipe is an interprocess communication mechanism that provides reliable, connection-oriented, two-way communication between processes on two computers. Named pipes are one form of client/server...