This page is for configuring authentication-related options for your
SSH server. Some of the less obvious options are :
- Allow authentication by password
- If this is set to No, users will need to have their .ssh directory
    setup with a public key before being able to login. If set to Yes, the
    user will be allowed to enter a password for authentication if validation
    cannot be done using a public key. 
 
- Allow RSA authentication?
- If this is set to No, users will always need to enter their password
    even if their public key has been set up. 
 
- Check permissions on key files?
- If set to Yes, the SSH server will check each user's .ssh
    directory and any parent directories to make sure they are not group
    writable, and the .ssh/identity file to make sure it is not
    readable by anyone else. If set to No, no checking of file permissions
    will be done.