I'm trying to SSH with PuTTY on Windows to a Ubuntu box.
I created the public key and private key with PuttyKeygen and added the public key to the server's
/home/[user]/.ssh/authorized_keys file as a single line, appending
[user@server] to the end, and adding ssh-rsa in the beginning, so it looks like:
ssh-rsa [key] [user]@[server]
This is on a single line;
authorized_keys chmod is 600, ~/.ssh folder is 700 on the server. Everything is the same according to this tutorial.
Still when I try to use the private key file from PuTTY I get the below response:
"Server refused our key"
Here is the session log:
2011-10-08 23:43:58 Looking up host "server" 2011-10-08 23:43:58 Connecting to server port 22 2011-10-08 23:43:58 Server version: SSH-2.0-OpenSSH_5.8p1 Debian-1ubuntu3 2011-10-08 23:43:58 We claim version: SSH-2.0-PuTTY_Release_0.60 2011-10-08 23:43:58 Using SSH protocol version 2 2011-10-08 23:43:58 Doing Diffie-Hellman group exchange 2011-10-08 23:43:58 Doing Diffie-Hellman key exchange with hash SHA-256 2011-10-08 23:43:59 Host key fingerprint is: 2011-10-08 23:43:59 ssh-rsa 2048 be:32:9b:69:e9:fb:5d:08:71:3e:08:09:4d:b2:c8:b4 2011-10-08 23:43:59 Initialised AES-256 SDCTR client->server encryption 2011-10-08 23:43:59 Initialised HMAC-SHA1 client->server MAC algorithm 2011-10-08 23:43:59 Initialised AES-256 SDCTR server->client encryption 2011-10-08 23:43:59 Initialised HMAC-SHA1 server->client MAC algorithm 2011-10-08 23:43:59 Reading private key file "C:\Users\User\.ssh\id_rsa.ppk" 2011-10-08 23:43:59 Offered public key 2011-10-08 23:43:59 Server refused public key
Here is what I see in auth.log file
Oct 9 01:53:12 [server] sshd: Connection closed by [client-ip] Oct 9 01:53:12 [server] sshd: Transferred: sent 3104, received 2008 bytes Oct 9 01:53:12 [server] sshd: Closing connection to [client-ip] port 51499 Oct 9 01:53:12 [server] sshd: pam_unix(sshd:session): session closed for user [user] Oct 9 01:53:15 [server] sshd: Connection closed by [client-ip] Oct 9 01:53:15 [server] sshd: Transferred: sent 1944288, received 9040 bytes Oct 9 01:53:15 [server] sshd: Closing connection to [client-ip] port 51498 Oct 9 01:53:15 [server] sshd: pam_unix(sshd:session): session closed for user [user] Oct 9 01:53:20 [server] sshd: Set /proc/self/oom_score_adj to 0 Oct 9 01:53:20 [server] sshd: Connection from [client-ip] port 51501 Oct 9 01:53:20 [server] sshd: Failed publickey for [user] from [client-ip] port 51501 ssh2
Here is sshd_config file
# 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 DEBUG#INFO # Authentication: LoginGraceTime 120 PermitRootLogin no StrictModes yes RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile /home/%u/.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 yes#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 yes to enable challenge-response passwords (beware issues with # some PAM modules and threads) ChallengeResponseAuthentication no # Change to no to disable tunnelled clear text passwords # PasswordAuthentication no # Kerberos options #KerberosAuthentication no #KerberosGetAFSToken no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes X11Forwarding yes X11DisplayOffset 10 PrintMotd no PrintLastLog yes TCPKeepAlive yes #UseLogin no #MaxStartups 10:30:60 #Banner /etc/issue.net # Allow client to pass locale environment variables AcceptEnv LANG LC_* Subsystem sftp /usr/lib/openssh/sftp-server # 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