Permission denied (publickey,password,keyboard-interactive)

cccc · 05-27-2007, 08:47 PM

hi

I cannot login into ssh due to the following error:

Code:

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

my system:

Code:

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

Code:

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

Code:

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:

Code:

# 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:

Code:

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 ?

arcanex · 05-28-2007, 03:04 AM

Hmm... I'm not very knowledgeable on this problem, but I just checked my /etc/ssh/sshd_config and every line was commented out, and I did not have /root/.ssh at all. Perhaps you can try that for troubleshooting?

bsdunix · 05-28-2007, 11:27 AM

I used your sshd_config file, tried root ssh connection to localhost, and got the same results as you. After trial and error, I was finally able to login. This is what I did:

Code:

# cd ~/.ssh
# ssh-keygen -t rsa
no passphrase entered for key
# cp id_rsa.pub authorized_keys
# chmod 600 authorized_keys
# ssh -v localhost
---snip---
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/identity
debug1: Offering public key: /root/.ssh/id_rsa
debug1: Server accepts key: pkalg ssh-rsa blen 277
debug1: read PEM private key done: type RSA
debug1: Authentication succeeded (publickey).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
Last login: Mon May 28 11:59:48 2007 from localhost
Linux 2.4.33.3.

If you enter a passphrase when you create your ssh key, you will be prompted to enter it when connecting via ssh.

The #AuthorizedKeysFile .ssh/authorized_keys entry is the default for where your public key is searched. If you don't copy your public key as I did in the above steps, you can have AuthorizedKeysFile .ssh/id_rsa.pub instead. Reference man sshd_config.

If you run sshd in debug mode, you'll see what it's looking for:

Code:

debug1: trying public key file /root/.ssh/authorized_keys
debug1: matching key found: file /root/.ssh/authorized_keys, line 1

or

Code:

debug1: trying public key file /root/.ssh/id_rsa.pub
debug1: matching key found: file /root/.ssh/id_rsa.pub, line 1

cccc · 05-31-2007, 05:32 PM

I've installed openssh again:

# ipkg install openssh

and now it seems to work.

thanks anyway.