sftp google authenticator and two factor authentication

[ghisler(Author)]

1. No I didn't, I will check it

2. How do you configure the Linux SSH server to get the verification code first?

[BobFx]

To get the verification code first, I moved the line

auth required pam_google_authenticator.so

that you can find in the file "/etc/pam.d/sshd", to the top of the file (to line 1).