mumtazhusain commented on issue #283:
URL: https://github.com/apache/mina-sshd/issues/283#issuecomment-1343540201

   Server side log shows that initial userauth-request with ssh-connection 
method none is not counted as a failure attempt. However, there are two 
attempts with ssh-connection method=keyboard-interactive. This is for the 
client program given in the bug description.
   
   I will enable debug logs on the client side to see why do we have this 
disparity.
   
   Dec 8 18:55:55 vm12 sshd[11757]: debug1: userauth-request for user 
_v_10.0.1.1_v_admin service ssh-connection method none [preauth]
   **Dec 8 18:55:55 vm12 sshd[11757]: debug1: attempt 0 failures 0 [preauth]**
   Dec 8 18:55:55 vm12 sshd[11757]: Processing for user _v_10.0.1.1_v_admin. 
rhost ([10.0.1.1](https://10.0.1.1/)) (8) (_v_admin)
   Dec 8 18:55:55 vm12 sshd[11757]: username_raw:_v_10.0.1.1_v_admin, 
username:admin, remote_ip:[10.0.1.1](https://10.0.1.1/)
   Dec 8 18:55:55 vm12 sshd[11757]: debug1: connection from 
[127.0.0.1](https://127.0.0.1/) matched 'LocalPort 830' at line 26
   Dec 8 18:55:55 vm12 sshd[11757]: debug1: PAM: initializing for "admin"
   Dec 8 18:55:55 vm12 sshd[11757]: debug1: PAM: setting PAM_RHOST to 
"[10.0.1.1](https://10.0.1.1/)"
   Dec 8 18:55:55 vm12 sshd[11757]: debug1: PAM: setting PAM_TTY to "ssh"
   Dec 8 18:55:55 vm12 sshd[11757]: debug1: userauth_send_banner: sent [preauth]
   Dec 8 18:55:55 vm12 sshd[11757]: debug1: userauth-request for user 
_v_10.0.1.1_v_admin service ssh-connection method keyboard-interactive [preauth]
   **Dec 8 18:55:55 vm12 sshd[11757]: debug1: attempt 1 failures 0 [preauth]**
   Dec 8 18:55:55 vm12 sshd[11757]: debug1: keyboard-interactive devs [preauth]
   Dec 8 18:55:55 vm12 sshd[11757]: debug1: auth2_challenge: 
user=_v_10.0.1.1_v_admin devs= [preauth]
   Dec 8 18:55:55 vm12 sshd[11757]: debug1: kbdint_alloc: devices 'pam' 
[preauth]
   Dec 8 18:55:55 vm12 sshd[11757]: debug1: auth2_challenge_start: trying 
authentication method 'pam' [preauth]
   Dec 8 18:55:55 vm12 sshd[11757]: Postponed keyboard-interactive for 
_v_10.0.1.1_v_admin from [127.0.0.1](https://127.0.0.1/) port 51184 ssh2 
[preauth]
   Dec 8 18:55:55 vm12 sshd[11774]: pam_unix(sshd:auth): authentication 
failure; logname= uid=0 euid=0 tty=ssh ruser= 
rhost=[10.0.1.1](https://10.0.1.1/) user=admin
   Dec 8 18:55:59 vm12 sshd[11757]: error: PAM: Authentication failure for 
admin from [10.0.1.1](https://10.0.1.1/)
   Dec 8 18:55:59 vm12 sshd[11757]: Failed keyboard-interactive/pam for admin 
from [10.0.1.1](https://10.0.1.1/) port 51184 ssh2
   Dec 8 18:55:59 vm12 sshd[11757]: debug1: userauth-request for user 
_v_10.0.1.1_v_admin service ssh-connection method keyboard-interactive [preauth]
   **Dec 8 18:55:59 vm12 sshd[11757]: debug1: attempt 2 failures 1 [preauth]**


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