auth Ques.

[Sunil K. Vallamkonda]

I have a question on authentication.
In openSSH, how do I enable keys based authentication (RSA) ?
(Normally a user creates private/public keys, then puts public key on
server under ~/.ssh/xxx ).  How can this be achieved using openSSH ?
I did not see in doc (may be I missed something..).

Is it enough: In sshd_config:
RSAAuthentication yes

1) On server, where should the user's public key be stored (~/.ssh/xxx)?

2) If RSA fails, does sshd automatically drop down to
SSH_CMSG_AUTH_PASSWORD
based ?  Is this option configurable ?

Thank you.

Sunil.