Jim Bond wrote:
>
> "aaa authentication ppp if-needed: does not
> authenticate if user has already been authenticated on
> a TTY line". What does it mean?
You have two options for user authentication:
- PPP authentication PAP/CHAP (after PPP starts),
- Username/Password prompt on tty line.
In second case, when user enters her/his username and
password, there is no need for PPP authentication.
That is the meaning of above command. If the user
enters via tty line (for example, by specifying 'Open
terminal window' in Windows) she/he will be prompted
for username and password, and will be authenticated
on tty line, with, for example:
line 1 240
autoselect during-login
autoselect ppp
authorization exec use-radius
login authentication use-radius
Consequently, there is no need for subsequent PPP
authentication.
Hope this helps.
Sasha, CCNP
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