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Top Forums UNIX for Advanced & Expert Users Ssh public/private key user login problem Post 303029835 by bash_in_my_head on Friday 1st of February 2019 01:08:59 PM
Old 02-01-2019
Ssh public/private key user login problem

I have a user account configuration with ssh public/private key that works on multiple servers centos and rhel. One server (Server F) that is not working in centos 6.8. When i ssh into server f I get prompted for a password. I have verified the config and it all is good. I put sshd into debug mode on server f on port 2200. when I ssh into server f on port 2200 i drop into a shell with no password prompt. Port 22 on server f accepts other user logins all with a password. There are no iptables firewall rules on server f. I have dug through the logs and am not spotting any indications as to why I cant login without a password.
Any ideas?

Server F
Code:
openssh-server-5.3p1-123.el6_9.x86_64
CentOS release 6.8 (Final)

server f
Code:
drwx------. 2 admin admin 4096 Feb  1 17:13 .ssh
-rw-------. 1 admin admin  440 Feb  1 17:13 authorized_keys


Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!

Last edited by RudiC; 02-01-2019 at 03:37 PM.. Reason: Added CODE tags.
 

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SSH-COPY-ID(1)						      General Commands Manual						    SSH-COPY-ID(1)

NAME
ssh-copy-id - install your public key in a remote machine's authorized_keys SYNOPSIS
ssh-copy-id [-i [identity_file]] [user@]machine DESCRIPTION
ssh-copy-id is a script that uses ssh to log into a remote machine (presumably using a login password, so password authentication should be enabled, unless you've done some clever use of multiple identities) It also changes the permissions of the remote user's home, ~/.ssh, and ~/.ssh/authorized_keys to remove group writability (which would oth- erwise prevent you from logging in, if the remote sshd has StrictModes set in its configuration). If the -i option is given then the identity file (defaults to ~/.ssh/id_rsa.pub) is used, regardless of whether there are any keys in your ssh-agent. Otherwise, if this: ssh-add -L provides any output, it uses that in preference to the identity file. If the -i option is used, or the ssh-add produced no output, then it uses the contents of the identity file. Once it has one or more fin- gerprints (by whatever means) it uses ssh to append them to ~/.ssh/authorized_keys on the remote machine (creating the file, and directory, if necessary) SEE ALSO
ssh(1), ssh-agent(1), sshd(8) OpenSSH 14 November 1999 SSH-COPY-ID(1)
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