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Old 07-22-2011, 04:20 PM   #1
Jadedkill
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Registered: Oct 2010
Location: Missouri
Distribution: CentOS, Gentoo
Posts: 19

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Cannot log into CentOS server via SSH with newly created user


I have created a new user and would now like to use putty to ssh into my CentOS box. Just to double check I am correct, what permissions do I need to give my new user or check before he will be able to log in via SSH. Also, when reviewing the 'secure' log in /var I noticed I had a line that stated it could not 'bind' to an address of 0.0.0.0. This lead me to believe this may be a DNS issue on my network but common sense immediately told me it worked fine because I can log in with root. Any ideas and thanks in advance.
 
Old 07-22-2011, 04:28 PM   #2
(=AA=)
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Registered: Dec 2002
Location: UK
Distribution: Mostly FreeBSD and CentOS
Posts: 24

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The output from the command: # netstat -napt | grep ssh
should show you on what address and ports SSH is active.

When you say you can login with root, I presume you mean you can login over SSH with root.

This might provide more info:
Log in as root and then run:
# ssh -vv user@localhost


Otherwise there must be something in the logs to tell you why auth is failing. I can't see why root would work but a user just created wouldn't, unless you've allowed SSH for a certain group of users only.
 
Old 07-24-2011, 07:54 PM   #3
chrism01
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Registered: Aug 2004
Location: Sydney
Distribution: Centos 7.7 (?), Centos 8.1
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A user should be able to login straight away if its interactive via a passwd. It only gets messy if you want to use auth-keys instead.
In the long run (after you've properly enabled your normal acct) I'd recommend disabling root login via ssh, as this is the first thing script-kiddies go for.
set
Code:
PermitRootLogin no
in sshd_config on server end.
 
Old 07-25-2011, 05:18 AM   #4
mesiol
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Registered: Nov 2008
Location: Lower Saxony, Germany
Distribution: CentOS, RHEL, Solaris 10, AIX, HP-UX
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You "cannot bind 0.0.0.0" during sshd start means there is already a process running on your configured ssh port. Try
Code:
netstat -plan
to check which process is running on the configured port for sshd. Possibly sshd has not shutdown correctly for some reason.

Also try
Code:
ssh -vvx $HOSTNAME
, this will create the maximum information on the client whats exactly going on during the connection. Also check /var/log/secure on the target host, there will be all login attempts logged.
 
Old 08-11-2011, 08:37 AM   #5
Jadedkill
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Registered: Oct 2010
Location: Missouri
Distribution: CentOS, Gentoo
Posts: 19

Original Poster
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I apologize for my absence. My new son was born last week and am in transition with jobs so things have been hectic. Due to my business outside of my home I have had to abandon ship on this particular task for the moment. I am going to mark this thread as solved and hopefully we can pick back up on it some time in the near future. Thank you very much for your answers and time you have put in to help me resolve this.
 
  


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