PAM: Authentication failure for zeroth from helix Failed keyboard-interactive/pam for zeroth from 192.168.0.102 port 1438 ssh2 debug1: Unable to open the btmp file /var/log/btmp: No such file or directory debug1: userauth-request for user zeroth service ssh-connection method keyboard- interactive debug1: attempt 3 failures 3 debug1: keyboard-interactive devs debug1: auth2_challenge: user=zeroth devs= debug1: kbdint_alloc: devices 'pam' debug1: auth2_challenge_start: trying authentication method 'pam' Postponed keyboard-interactive for zeroth from 192.168.0.102 port 1438 ssh2