MRV Communications LX-4000 Series Información técnica descargar pdf (Pagina 513)

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A-2 RADIUS Authentication Process

LX Series Configuration Guide

RADIUS Authentication Process

The following example describes the steps in the RADIUS

authentication process. In this example, the user attempts to

gain access to an LX asynchronous port.

1. The LX unit prompts the user for a username and password.

2. The LX unit takes the username and password and creates

an access-request packet identifying the LX unit making the

request, the username and password, and the port being

used. The LX unit then sends the access-request packet to

the designated RADIUS server for authentication.

L The user password is encrypted to prevent it from

being intercepted and reused by an unwanted user.

This is done by generating a random vector and

placing it in the request header. A copy of the

random vector is MD5 encoded using the configured

secret. The user’s password is then encrypted by

XORing it with the encoded copy of the random

vector.

3. The RADIUS server validates the request and then decrypts

the password.

4. The username and password are authenticated by the

RADIUS server.

5. Upon successful authentication, the RADIUS server sends an

access-accept packet containing any specific configuration

information associated with that user.

6. The LX unit then grants the user the services requested.

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