Avaya a500 Guia Do Utilizador

PPP Commands

Cajun A500 ATM Switch User Guide

 9-9

The 

ppp setCHAP 

command enables you to set up to five hostname/secret pairs used for 

incoming CHAP negotiations. With CHAP, the authenticator (server) sends a randomly 

generated challenge string to the client, along its hostname. The client uses the hostname 

to look up the appropriate secret, combines it with the challenge, and encrypts the string 

using a one-way hashing function. The result is returned to the server along with the 

client’s hostname. The server now performs the same computation, and acknowledges 

the client if it arrives at the same result. CHAP also sends challenges at regular intervals 

to make sure the client hasn’t been replaced by an intruder, for instance by just 

switching phone lines.

ppp setCHAP { hostname | secret }

This command requires the following argument(s):

A500:ppp setCHAP 

dialup server name

hostname/secret

Enter up to five hostname/secret pairs for incoming CHAP 

negotiations. Hostnames and secrets can be up to eight characters 

each. For example: hostname, name of dialup server.