# and ChallengeResponseAuthentication to 'no'. # 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 Visit Stack Exchange Tour Start here for quick overview the site Help Center Detailed answers. If this is enabled, PAM authentication will communities including Stack Overflow, the largest, most trusted online community for developers learn, share their knowledge, and build their careers. # 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 #Overwritten by lwidentity: ChallengeResponseAuthentication no # 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 The program ssh-copy-id assists with this step. I came across a requirement for automatically logging into the server without entering password, This can done using the RSA. Think of it as installing the lock on your server. This step involves copying the public SSH key file over to your server. # Lifetime and size of ephemeral version 1 server key Copy the public SSH key to the server You only need to complete one more step, before you can login to your server over SSH, without specifying a password. #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 Remember, this will only work if you have password-based SSH access to your server. Bash Copy ssh-copy-id -i /.ssh/idrsa. This is illustrated below: rootF17 ssh-copy-id root192.168.122. Use ssh-copy-id to copy the key to an existing VM If you have already created a VM, you can add a new SSH public key to your Linux VM using ssh-copy-id. The remote machine /etc/ssh/sshd_config file is as follows: # Package generated configuration file If you do not have ssh-copy-id available, but you have password-based SSH access to an account on your server, you can upload your keys using a conventional SSH method. It will then copy your key to the authorizedkeys file of the remote host and from then on you should be able to log in without authenticating. So myuser is actually mydomain\myuser or escaping the \ character as in my previous question. And my local password is an ordinary Linux password of my laptop, and the remote machine is an Ubuntu box (11.10) joined to an Active Directory Domain via likewise-open. Why am I being prompted three times for the local user's password? Is that an expected behavior? Also, what is going on under the hood?ĮDIT: when using ssh, it doesn't prompt for the local user password. Noticed from my previous question that when trying to copy an SSH public key to a remote host via ssh-copy-id, I am prompted for the local user password three times: ssh-copy-id password:
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