Re: ssh cannot login

[Nelson Castillo <nelsoneci@gmail.com>]

Hi Jan.

> > debug1: Next authentication method: keyboard-interactive
> > Connection closed by 192.168.0.3
> Hmm, no prompt, just closing?

Yes. Just closing... That's the issue.
 
> > debug1: userauth-request for user n service ssh-connection method
> > keyboard-interactive
> > debug1: attempt 1 failures 1
> Hmm, where did all the public-key stuff go? We're already in keyboard-
> interactive?

Well, I don't want to use stored keys. I really wanna user
the keyboard-interactive method.
 
> > debug1: PAM: cleanup
> > debug3: PAM: sshpam_thread_cleanup entering
> > Segmentation fault
> Whoa! Well, that explains the missing password prompt.
> I'd guess there's something wrong with your PAM configuration.
> Try to disable PAM for ssh (change UsePAM to "no" in /etc/ssh/sshd_config),
> and see if that works... if it does, then we'll have a closer look at your
> PAM config.

Ok. I haven't touched the PAM config.

Server:

debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /home/n/.ssh/identity
debug1: Trying private key: /home/n/.ssh/id_rsa
debug1: Trying private key: /home/n/.ssh/id_dsa
debug1: Next authentication method: keyboard-interactive
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: No more authentication methods to try.
Permission denied (publickey,keyboard-interactive).


Client:

debug2: kbdint_next_device: devices <empty>
debug1: auth2_challenge_start: trying authentication method 'pam'
debug3: mm_sshpam_init_ctx
debug3: mm_request_send entering: type 48
debug3: mm_sshpam_init_ctx: waiting for MONITOR_ANS_PAM_INIT_CTX
debug3: mm_request_receive_expect entering: type 49
debug3: mm_request_receive entering
debug2: monitor_read: 6 used once, disabling now
debug3: mm_request_receive entering
debug3: monitor_read: checking request 3
debug3: mm_answer_authserv: service=ssh-connection, style=
debug2: monitor_read: 3 used once, disabling now
debug3: mm_request_receive entering
debug3: monitor_read: checking request 48
debug3: mm_answer_pam_init_ctx
debug3: PAM: sshpam_init_ctx entering
debug3: mm_request_send entering: type 49
debug3: mm_sshpam_init_ctx: pam_init_ctx failed
Failed keyboard-interactive for n from 192.168.0.1 port 38955 ssh2
Connection closed by 192.168.0.1
debug1: do_cleanup
debug3: mm_request_receive entering
debug1: do_cleanup


sshd_config:

# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::
#ListenAddress 0.0.0.0
Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
#Privilege Separation is turned on for security
UsePrivilegeSeparation yes

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 768

# Logging
SyslogFacility AUTH
LogLevel INFO

# Authentication:
LoginGraceTime 600
PermitRootLogin yes
StrictModes yes

RSAAuthentication yes
PubkeyAuthentication yes
#AuthorizedKeysFile     %h/.ssh/authorized_keys

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2
HostbasedAuthentication no
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords no

# Change to no to disable s/key passwords
#ChallengeResponseAuthentication yes

# Change to yes to enable tunnelled clear text passwords
PasswordAuthentication no


# To change Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#AFSTokenPassing no
#KerberosTicketCleanup no

# Kerberos TGT Passing does only work with the AFS kaserver
#KerberosTgtPassing yes

X11Forwarding no
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
KeepAlive yes
#UseLogin no

#MaxStartups 10:30:60
#Banner /etc/issue.net

Subsystem       sftp    /usr/lib/sftp-server

#I commented this for the test Jan propoesd. Doesn't work uncommented.
#UsePAM yes

(as I said before, I haven't touched the PAM config)

Regards.