This object specifies authentication services applied to a
target PPP connection and other options affecting authentication
services:
'chap'
This option enables the Challenge Handshake Protocol (CHAP)
on a target PPP connection.
'msChap'
This option enables Microsoft's CHAP on a target PPP
connection.
'msChapV2'
This option enables version 2 of Microsoft's CHAP on a
target PPP connection.
'pap'
This option enables Password Authentication Protocol (PAP)
on a target PPP connection.
'eap'
This option enables Extensible Authentication Protocol (EAP)
on a target PPP connection.
'optional'
This option specifies that the system accepts the connection
even if the peer of a target PPP connection refuses to
accept the authentication methods the system has
requested.
'callin'
This option specifies that authentication should only happen
for incoming calls.
'oneTime'
This option specifies that the system accepts the username
and password in the username field of authentication
responses received on a target PPP connection.
This column is valid only if the 'authentication' bit of the
corresponding instance of cdtPppValid is '1'.