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Re: Peculiar problem with root login




On 06/12/2017 06:39 AM, Harry Putnam wrote:
Running debian jesse in a vbox vm on a Solaris host

I have what seems like an unusual problem with root login on this
host.

I've done the normal things one does to allow root login; that is, add

   PermitRootLogin yes

to /etc/ssh/sshd_config

Restart ssh, and in fact this host has been rebooted a few times since
adding that Permit line.

I set sudo up to work with no passwd for a certain user long ago and
so I was able to redo root passwd just to make sure there wasn't some
error there.

Still, I cannot login as root user  I don't mean at the main login
screen one gets on bootup, but from an xterm in a running session.

Of course, checked to see if Caps lock was on...

I've checked output of ssh -vvv root@localhost, and see nothing very
exciting.. just asking for password and rejecting it repeatedly:

debug1: Next authentication method: password
  root@localhost's password:
  debug2: we sent a password packet, wait for reply
  debug1: Authentications that can continue: publickey,password
  Permission denied, please try again.

This password has been in use for many years on vm hosts behind
firewall etc etc. So, there is literally NO chance I'm just getting it
wrong.  Not to mention as I said above that I redid the passwd in this
most recent attempt to get it working.

I'm fresh out of ideas as to what else to do here.

The auth log shows:

  Jun 11 14:50:55 d2 sshd[2830]: pam_unix(sshd:auth): authentication
  failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=d.local.lan
  user=root

  Jun 11 14:50:57 d2 sshd[2830]: Failed password for root from
  127.0.0.1 port 54522 ssh2

Please run the following commands from the console of the jesse vm as root and paste your console session (prompts, commands entered, output obtained). If you redact anything, substitute the phrase '<redacted>':

# cat /etc/debian_version

# uname -a

# dpkg-query --show openssh-server

# dpkg-query --show openssh-client

# ls -1 /etc/ssh/*ssh*

# ls -1 /root/.ssh

# egrep -v '^.*#' /etc/ssh/sshd_config | grep .

# ssh localhost

# tail /var/log/auth.log


David