Permission denied (publickey,password,keyboard-interactive)

['chris']

hi

I cannot login into ssh due to the following error:

storage> ssh localhost
Permission denied (publickey,password,keyboard-interactive).


my system:

storage> uname -a
Linux storage 2.4.22-uc0 #458 Tue Apr 3 01:09:49 CST 2007 ppc unknown

storage> ssh -v
OpenSSH_4.2p1, OpenSSL 0.9.7e 25 Oct 2004

storage> ls -la /etc/ssh
drwxr-xr-x 2 root root 1024 May 28 03:23 .
drwxr-xr-x 8 root root 2048 May 28 03:13 ..
-rw------- 1 root root 1192 May 28 03:12 ssh_host_dsa_key
-rw-r--r-- 1 root root 1114 May 28 03:12 ssh_host_dsa_key.pub
-rw------- 1 root root 975 May 28 03:03 ssh_host_key
-rw-r--r-- 1 root root 639 May 28 03:03 ssh_host_key.pub
-rw------- 1 root root 1675 May 28 03:05 ssh_host_rsa_key
-rw-r--r-- 1 root root 394 May 28 03:05 ssh_host_rsa_key.pub
-rw-r--r-- 1 root root 2974 May 28 03:23 sshd_config
-rw-r--r-- 1 root root 2961 May 28 03:27 sshd_config_org
-rw-r--r-- 1 root root 2977 May 28 03:23 sshd_config_save


my sshd configuration:

# vi etc/ssh/sshd_config

# $OpenBSD: sshd_config,v 1.72 2005/07/25 11:59:40 markus Exp $

# This is the sshd server system-wide configuration file. See
# sshd_config(5) for more information.

# This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin

# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented. Uncommented options change a
# default value.

Port 22
Protocol 2,1
#AddressFamily any
ListenAddress 0.0.0.0
#ListenAddress ::

# HostKey for protocol version 1
HostKey /etc/ssh/ssh_host_key
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key

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

# Logging
# obsoletes QuietMode and FascistLogging
#SyslogFacility AUTH
#LogLevel INFO

# Authentication:

#LoginGraceTime 2m
PermitRootLogin yes
#StrictModes yes
#MaxAuthTries 6

RSAAuthentication yes
PubkeyAuthentication yes
#AuthorizedKeysFile .ssh/authorized_keys

#now ssh is only used by rsync ==> auth by passwd file of rsync server
#AuthPassFile /etc/rsyncd.secrets

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

# To disable tunneled clear text passwords, change to no here!
PasswordAuthentication no
PermitEmptyPasswords no

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

# Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
#KerberosGetAFSToken no

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication mechanism.
# Depending on your PAM configuration, this may bypass the setting of
# PasswordAuthentication, PermitEmptyPasswords, and
# "PermitRootLogin without-password". If you just want the PAM account and
# session checks to run without PAM authentication, then enable this but set
# ChallengeResponseAuthentication=no
#UsePAM no
Compression yes

#AllowTcpForwarding yes
#GatewayPorts no
#X11Forwarding no
#X11DisplayOffset 10
#X11UseLocalhost yes
#PrintMotd yes
#PrintLastLog yes
#TCPKeepAlive yes
#UseLogin no
#UsePrivilegeSeparation yes
#PermitUserEnvironment no
#Compression delayed
#ClientAliveInterval 0
#ClientAliveCountMax 3
#UseDNS yes
#PidFile /var/run/sshd.pid
#MaxStartups 10

DenyUsers admin

# no default banner path
#Banner /some/path

# override default of no subsystems
Subsystem sftp /usr/libexec/sftp-server


I tried to remove /root/.ssh/known_hosts
and regenerate all keys:

ssh-keygen -t rsa1 -f /etc/ssh/ssh_host_key -N ''
ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ''
ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -N ''

but still doesn't work !

knows someone howto solve this problem ?

[Stuart Browne · Accepted solution]

This is because your user doesn't have the their own keys shared in the '~/.ssh/authorized_keys' file.

If you read through your config, you'll see that you've got "PasswordAuthentication no".

This means, no matter what, you won't be asked for a password.

It has the side effect of meaning you have to have pre-shared authorized keys.

['chris']

thanks, but howto create pre-shared authorized keys ?

['chris']

I tried to generate pre-shared authorized keys using:

# cd /root/.ssh

# ssh-keygen -t rsa

# ssh-keygen -t rsa

# storage> ls -la /root/.ssh
drwx------ 2 root root 1024 May 28 15:09 .
drwxr-xr-x 3 root root 1024 May 28 02:07 ..
-rw------- 1 root root 1743 May 28 15:06 authorized_keys
-rw-r--r-- 1 root root 394 May 28 15:06 authorized_keys.pub
-rw------- 1 root root 1264 May 28 15:09 authorized_keys2
-rw-r--r-- 1 root root 1114 May 28 15:09 authorized_keys2.pub
-rw-r--r-- 1 root root 391 May 28 04:44 known_hosts

but still doesn't work:

storage> ssh -v localhost
OpenSSH_4.2p1, OpenSSL 0.9.7e 25 Oct 2004
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to localhost [127.0.0.1] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/identity type -1
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software version OpenSSH_4.2
debug1: match: OpenSSH_4.2 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.2
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'localhost' is known and matches the RSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: ssh_rsa_verify: signature correct
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: /root/.ssh/identity
debug1: Trying private key: /root/.ssh/id_rsa
debug1: Trying private key: /root/.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).
storage>

['chris']

I tried to generate pre-shared authorized keys using:

# cd /root/.ssh

# ssh-keygen -t rsa

# ssh-keygen -t dsa

# storage> ls -la /root/.ssh
drwx------ 2 root root 1024 May 28 15:09 .
drwxr-xr-x 3 root root 1024 May 28 02:07 ..
-rw------- 1 root root 1743 May 28 15:06 authorized_keys
-rw-r--r-- 1 root root 394 May 28 15:06 authorized_keys.pub
-rw------- 1 root root 1264 May 28 15:09 authorized_keys2
-rw-r--r-- 1 root root 1114 May 28 15:09 authorized_keys2.pub
-rw-r--r-- 1 root root 391 May 28 04:44 known_hosts

but still doesn't work:

storage> ssh -v localhost
OpenSSH_4.2p1, OpenSSL 0.9.7e 25 Oct 2004
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to localhost [127.0.0.1] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/identity type -1
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software version OpenSSH_4.2
debug1: match: OpenSSH_4.2 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.2
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'localhost' is known and matches the RSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: ssh_rsa_verify: signature correct
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: /root/.ssh/identity
debug1: Trying private key: /root/.ssh/id_rsa
debug1: Trying private key: /root/.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).
storage>

[Ivan Ferreira]

You have to copy the public key to the http://macnugget.org/projects/publickeys/ in the remote host, please see:

http://macnugget.org/projects/publickeys/

[ADMIN : The above links are no longer valid]

['chris']

I've installed openssh again:

# ipkg install openssh

and now it seems to work.

thanks anyway.