[sf-lug] request for help re ssh -- sshd login failure

[jim]

Problem : we cannot use ssh to log in on a newly installed
Ubuntu host.


* We have a linux machine on local network 192.168.1.119
   See specifics for this host ( 119 ) below.

* We installed openssh-server.

* Using an ssh client on a Ubuntu 12.04 host on the local
   network 192.168.1.109 we cannot log in to 119

* After many attempts using the default ( yes ) settings, we
   changed the following directive values in /etc/ssh/sshd_config
   but with no difference in behavior or log messages.

     X11Forwarding no     ## changed from  yes  to  no  20160205
     UsePAM  no          ## changed from  yes  to  no  20160206


109 $ ssh lerner at 192.168.1.119
rsa ~/.ssh/known_hosts negotiation successful
passwd:
Permission denied, please try again.
...
109 $
## see output of
119 $ tail -2 /var/log/auth.log
## at bottom of this file :

     ## server listening on 0.0.0.0 port 22
     ## server listening on :: port 22
     ## ?? does  ::  mean 192.168.1.119 ??
     ## ?? i.e. is sshd listing both on lo and eth0 ??



-------stats for host on 192.168.1.119-------------

##------
119 $ uname -a
Linux mailin 3.5.0-23-generic #35~precise1-Ubuntu SMP Fri Jan 25 
17:15:33 UTC 2013 i686 i686 i386 GNU/Linux


##------
119 $ cat /etc/issue
Ubuntu 12.04.2 LTS \n \l


##------
119 $ free
              total       used       free     shared    buffers cached
Mem:       4013004    1503756    2509248          0     226992 821120
-/+ buffers/cache:     455644    3557360
Swap:      2928628          0    2928628


##------
119 $ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda2        19G  4.6G   13G  26% /
udev            2.0G  4.0K  2.0G   1% /dev
tmpfs           784M  892K  783M   1% /run
none            5.0M     0  5.0M   0% /run/lock
none            2.0G   76K  2.0G   1% /run/shm
/dev/sda6        37G  176M   35G   1% /var/mail
/dev/sda5       9.2G  163M  8.6G   2% /home
/dev/sdb1       3.8G  1.6G  2.2G  42% /media/KINGSTON


##------
119 $ sudo iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination


##------
119 $ tail -2 /var/log/auth.log
Feb  6 11:29:59 mailin sshd[8549]: Server listening on 0.0.0.0 port 22.
Feb  6 11:29:59 mailin sshd[8549]: Server listening on :: port 22.

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