To see if existing SSH keys are present: ls -al ~/.ssh/id_*.pub The following steps will describe the process for configuring passwordless SSH login:īefore generating a new SSH key pair first check if you already have an SSH key on your client machine because you don’t want to overwrite your existing keys. To set up a passwordless SSH login in Linux all you need to do is to generate a public authentication key and append it to the remote hosts ~/.ssh/authorized_keys file. Import rsa key termius authentication has failed how to#In this tutorial, we will show you how to setup an SSH key-based authentication as well how to connect to your Linux server without entering a password. The two most popular mechanisms are passwords based authentication and public key based authentication. # and ChallengeResponseAuthentication to 'no'.Secure Shell (SSH) is a cryptographic network protocol used for secure connection between a client and a server and supports various authentication mechanisms. # PAM authentication, then enable this but set PasswordAuthentication # If you just want the PAM account and session checks to run without # the setting of "PermitRootLogin without-password". # PAM authentication via ChallengeResponseAuthentication may bypass # be allowed through the ChallengeResponseAuthentication and If this is enabled, PAM authentication will # Set this to 'yes' to enable PAM authentication, account processing, Subsystem sftp /usr/lib/openssh/sftp-server # Allow client to pass locale environment variables # Change to no to disable tunnelled clear text passwords # Change to yes to enable challenge-response passwords (beware issues with # To enable empty passwords, change to yes (NOT RECOMMENDED) # Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication # For this to work you will also need host keys in /etc/ssh_known_hosts # Don't read the user's ~/.rhosts and ~/.shosts files #AuthorizedKeysFile %h/.ssh/authorized_keys # Lifetime and size of ephemeral version 1 server key #Privilege Separation is turned on for security # Use these options to restrict which interfaces/protocols sshd will bind to # What ports, IPs and protocols we listen for # See the sshd_config(5) manpage for details debug3: load_hostkeys: loading entries for host ":2222" from file "/home/leetom/.ssh/known_hosts"ĭebug3: load_hostkeys: found key type ECDSA in file /home/leetom/.ssh/known_hosts:2ĭebug3: load_hostkeys: loading entries for host ":2222" from file "/home/leetom/.ssh/known_hosts"ĭebug1: Host ':2222' is known and matches the ECDSA host key.ĭebug1: Found key in /home/leetom/.ssh/known_hosts:2ĭebug1: ssh_ecdsa_verify: signature correctĭebug2: key: /home/leetom/.ssh/id_rsa ((nil)),ĭebug2: key: /home/leetom/.ssh/id_dsa ((nil)),ĭebug2: key: /home/leetom/.ssh/id_ecdsa ((nil)),ĭebug1: Authentications that can continue: publickey,passwordĭebug3: start over, passed a different list publickey,passwordĭebug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,passwordĭebug3: remaining preferred: keyboard-interactive,passwordĭebug1: Next authentication method: publickeyĭebug1: Trying private key: /home/leetom/.ssh/id_rsaĭebug1: read PEM private key done: type RSAĭebug3: sign_and_send_pubkey: RSA 68:51:b6:ed:cc:c2:54:f4:xx:15:41:d7:f5:4a:0e:daĭebug2: we sent a publickey packet, wait for replyĭebug1: Trying private key: /home/leetom/.ssh/id_dsaĭebug3: no such identity: /home/leetom/.ssh/id_dsa: No such file or directoryĭebug1: Trying private key: /home/leetom/.ssh/id_ecdsaĭebug3: no such identity: /home/leetom/.ssh/id_ecdsa: No such file or directoryĭebug2: we did not send a packet, disable methodĭebug1: Next authentication method: password:Īnd the sshd_config # Package generated configuration file I even have updated openssh-server openssh-client on both client and server side. The debug infomation (with -vvv option) and sshd_config is as following, and nothing listed in server's auth.log file. ssh dir to 700, authorzied_keys file to 600, and I have checke sshd_config file, Import rsa key termius authentication has failed password#I had generate private and public keys using ssh-keygen, and put id_rsa.pub to server side and added it to authorzied_keys accordding to the method I found on the Internet.īut, I still have to input password while I am trying to login. I am using ubuntu 13.10, and the server runs ubuntu 12.04.
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