3Com MSR 30, MSR 50 manual Ppp authentication-mode chap pap call-in domain isp-name, Characters

510CHAPTER 31: PPP AND MP CONFIGURATION COMMANDS

pppauthentication-mode

Syntax	ppp authentication-mode { chap pap } [ [ call-in ] domain isp-name]
	undo ppp authentication-mode
View	Interface view
Parameter	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.
Description	Use the ppp authentication-modecommand to configure the PPP
	authentication mode used when the local device authenticates the peer.

Use the undo ppp authentication-modecommand 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.