Question
Putty error: No supported authentication methods available (server sent: keyboard-interactive)
- Posted February 22, 2019
- NginxUbuntu 18.04
Hi all, I have a droplets using Ubuntu 18.04 and nginx and I want add two factor authentication (Google PAM). I have following this tutorial (https://www.digitalocean.com/community/tutorials/how-to-set-up-multi-factor-authentication-for-ssh-on-ubuntu-16-04), I know this was not appropriate Ubuntu version, but I have searched another tutorials and found them having same steps.
After installing Google PAM and configure the configuration file, this line makes me error every time I did ssh via Putty: AuthenticationMethods publickey,password publickey,keyboard-interactive and gave me error message: Putty error: No supported authentication methods available (server sent: keyboard-interactive)
I just confused because other people having trouble with no supported authentication methods, server sent: publickey not keyboard-interactive. And others said because login with non-root user. Please help me I’m stuck :(
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If both PasswordAuthentication no and UsePAM no, the AuthenticationMethods publickey,password publickey,keyboard-interactive will contradict. No interactivity for either passord or verification code entry will be allowed. In my case, I set PasswordAuthentication no and UsePAM yes. This allowed me to enter the verification code for the 2FA
Hello, @denverten
Are you trying to login using your ssh key or with your password and also do you login as root or using non-root username?
Looking forward to hearing from you.
Regards, Alex
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I’m also experiencing this error following this same guide, any help would be appreciated.