3com MSR 20-20 참조 매뉴얼

C

HAPTER

 31: PPP 

AND

 MP C

ONFIGURATION

 C

OMMANDS

ppp authentication-mode { chap | pap } [ [ call-in ] domain isp-name ]

Interface view

chap, pap: Authentication modes. Use either mode.

call-in: Performs authentication only when receives a call from the remote end.

domain isp-name: Domain name during authentication, a string of 1 to 24 
characters.

Use the ppp authentication-mode command to configure the PPP 
authentication mode used when the local device authenticates the peer.

Use the undo ppp authentication-mode command to disable authentication.

If you configure the ppp authentication-mode { chap | pap } command without 
specifying the domain, the default domain named system is used by default. Local 
authentication will be adopted and the address pool for address allocation must 
be the one you have configured for this domain.

If the domain is specified, you must configure an address pool in the specified 
domain.

If the username received includes a domain name, this domain name will be used 
for authentication (if the name does not exist, authentication is denied). 
Otherwise, the domain name configured for PPP authentication will be used.

If the username does not include a domain name, and the domain name 
configured for PPP authentication does not exist, authentication is denied.

By default, PPP authentication is not performed.

There are two types of PPP authentication: PAP and CHAP.

■

PAP is a two-way handshake authentication, using plain text password.

■

CHAP is a three-way handshake authentication, using ciphertext password.

In addition, you can also adopt the AAA authentication algorithm list (if defined) 
to perform authentication.

CHAP or PAP is just an authentication process. It is AAA that decides whether the 
authentication is successful or not. AAA uses a local authentication database or a 
AAA server to perform authentication.

n

For detailed description on how to create a local user and configure its attributes, 
and on how to create a domain and configure its attributes, refer to “local-user” 
on page 1940 and “domain” on page 1936.