Moxa Technologies NPort 5200 Serie User Manual download pdf (Page 231)

CN2610 User’s Manual RADIUS Server

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What is RADIUS?

Definition

Remote Authentication Dial-up User Service, or RADIUS, is the standard for centralizing the

authentication, authorization, and accounting of remote access users.

Here is a brief description of how RADIUS works: When a user dials in to a remote access device,

that device communicates with the central RADIUS server to determine if the user is authorized to

connect to the LAN. The RADIUS server performs the authentication and responds with the

result—either accept or reject. If the user is accepted, the remote access server routes the user onto

the network; if not, the RAS will terminate the user’s connection. The RADIUS server also

provides accounting services if supported by the remote access server.

With RADIUS, a network manager or ISP only needs to maintain a single, central database against

which all remote user authentication takes place. This greatly eases the management burden

associated with administering large numbers of Dial-in users.

Client/Server Architecture

RADIUS is a type of client-server software. Communication servers, such as CN2610, play an

active role, whereas a RADIUS server is passive.

1. When a remote host is connected to CN2610, it is prompted to enter its user ID and password.

2. After receiving the user ID and password, CN2610 sends the information to a defined

RADIUS server. Up to this point, the remote user is still unable to access the network.

3. The RADIUS server compares the user ID and password with its internal database, and then

uses the internet to respond, either accepting or rejecting.

4. If CN2610 receives the “accept” message from the RADIUS server, the remote user is

allowed to enter the network. Otherwise, CN2610 will wait for another try, or terminate the

connection when a specified time limit has been reached.

Setting up CN2610

Setting up the RADIUS Server IP Address

1. From the MAIN MENU, select Server, and then press Enter.

CN2610-8 CN2610-8_19 V2.0 MAIN MENU

------------------------------------------------------------------------------

[Server] Port seTting sAve Utility Restart Exit

Examine/modify async server node/table configuration

Enter: select ESC: previous menu

2. From the SERVER MENU, select Adv., and then press Enter.

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Moxa Technologies NPort 5200 Serie User Manual Page 231