Ppp Chap Password - 3Com 3C13618 Command Reference Manual

3Com Router Command Reference Guide — V1.00
There are two PPP authentication methods: PAP and CHAP. PAP (Password
Authentication Protocol) is a twice handshake authentication protocol, which transfers
the password in plain text. CHAP (Challenge Handshake Authentication Protocol) is a
three-times handshake, which transfers not the password in the network but the
username. Comparatively, CHAP authentication has the better secrecy, and is more
secure and reliable.
At an asynchronous dialer interface, you can perform authentication only on incoming
calls instead of outgoing calls. This configuration is necessary when the router serves
as an access server.
In addition, the defined AAA authentication method is used. CHAP or PAP is just an
authentication process. The success of the authentication is decided by AAA, which
can authenticate based on the local authentication database or AAA server.
For related commands, see local-user, ppp chap user, ppp pap local-user, aaa
authentication-scheme ppp.
Example
# Authenticate the remote device by PAP on interface Serial0.
[3Com-Serial0]ppp authentication-mode pap

1.1.5 ppp chap password

Syntax
ppp chap password { simple | cipher } password
undo ppp chap password
View
Interface view
Parameter
password: Password transmitted.
simple: Display the password plain text.
cipher: Display the password in cipher text.
Description
Using the ppp chap password command, you can configure the default CHAP
password when the local router authenticates the remote router. Using the undo ppp
chap password command, you can disable the configuration.
By default, CHAP password is null.
10