Hi Guys,
I tried to log in to my server with the public/private keys. But all I tried - it failed

  • Client: Windows 8
  • Server: SLES11
  • Putty and Puttygen



On my Windows Client, I generated my public and private keys with puttygen and copied the public key into the authorized_keys file in my home directory
Code:
/home/user/.ssh/authorized_keys
This is my public key:
Code:
---- BEGIN SSH2 PUBLIC KEY ----
Comment: "rsa-key-20141203"
AAAAB3NzaC1yc2EAAAABJQAAAIEAmQrj3yGt8FhgRmcYhPc1lqVEmAPFT+7ifc5X
EeG2IWRhsNIJVSDcHJXBSPborrvFZHEZwggMVZZBzXH63MlxCMhb2CcYc6ck3Co7
kmStXV4ov28w4uDEe60t0qFCyQkqyy/dyrnBngSezS9lz7nCPstotZhkfKlGcJd0
LVgDEIc=
---- END SSH2 PUBLIC KEY ----

So, I read that I have to remove the first two lines and the last one and add on the first line a "ssh-rsa "

That is what I have now:
Code:
ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAmQrj3yGt8FhgRmcYhPc1lqVEmAPFT+7ifc5XEeG2IWRhsNIJVSDcHJXBSPborrvFZHEZwggMVZZBzXH63MlxCMhb2CcYc6ck3Co7kmStXV4ov28w4uDEe60t0qFCyQkqyy/dyrnBngSezS9lz7nCPstotZhkfKlGcJd0LVgDEIc=
All in one line.
And I did this changes:
Code:
chmod 700 /.ssh
chmod 600 /.ssh/authorized_keys
In Putty I select my private key file and try to login, but the server send a "Server refused our key" and i don't know what I have to do......

I took a look at my sshd_config and try to change some options:

The SSHD_config:
Code:
#       $OpenBSD: sshd_config,v 1.89 2013/02/06 00:20:42 dtucker 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 override the
# default value.

#Port 22
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::

# The default requires explicit activation of protocol 1
Protocol 2

# 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
#HostKey /etc/ssh/ssh_host_ecdsa_key

# Lifetime and size of ephemeral version 1 server key
#KeyRegenerationInterval 1h
#ServerKeyBits 1024

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

# Authentication:

#LoginGraceTime 2m
#PermitRootLogin yes
#StrictModes yes
#MaxAuthTries 6
#MaxSessions 10

RSAAuthentication yes
PubkeyAuthentication yes

# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
# but this is overridden so installations will only check .ssh/authorized_keys
AuthorizedKeysFile      ~/.ssh/authorized_keys

#AuthorizedPrincipalsFile none

#AuthorizedKeysCommand none
#AuthorizedKeysCommandUser nobody

# 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
#GSSAPIStrictAcceptorCheck yes
#GSSAPIKeyExchange no

# Set this to 'yes' to enable support for the deprecated 'gssapi' authentication
# mechanism to OpenSSH 3.8p1. The newer 'gssapi-with-mic' mechanism is included
# in this release. The use of 'gssapi' is deprecated due to the presence of
# potential man-in-the-middle attacks, which 'gssapi-with-mic' is not susceptible to.
#GSSAPIEnableMITMAttack no


# 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 and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM yes

#AllowAgentForwarding yes
#AllowTcpForwarding yes
#GatewayPorts no
X11Forwarding yes
#X11DisplayOffset 10
#X11UseLocalhost yes
#PrintMotd yes
#PrintLastLog yes
#TCPKeepAlive yes
#UseLogin no
UsePrivilegeSeparation sandbox          # Default for new installations.
#PermitUserEnvironment no
#Compression delayed
#ClientAliveInterval 0
#ClientAliveCountMax 3
#UseDNS yes
#PidFile /var/run/sshd.pid
#MaxStartups 10:30:100
#PermitTunnel no
#ChrootDirectory none
#VersionAddendum none

# no default banner path
#Banner none

# override default of no subsystems
Subsystem       sftp    /usr/lib64/ssh/sftp-server

# This enables accepting locale enviroment variables LC_* LANG, see sshd_config(5).
AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES
AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT
AcceptEnv LC_IDENTIFICATION LC_ALL

# Example of overriding settings on a per-user basis
#Match User anoncvs
#       X11Forwarding no
#       AllowTcpForwarding no
#       ForceCommand cvs server
A reload/restart of sshd doesn't change something. What can I do? Where is my fault? I have no idea..

Thank you in advance