Authentication Issue

[Donaldson Jeffrey]

Marc,

Thank you for the tip. This worked perfectly!

Jeff Donaldson
Newark Charter School

On 12/15/2011 09:31 AM, Marc Gariépy wrote:
> hello,
>
> you probably need to disable dns lookup on ssh server.
> simply add "UseDNS no" in /etc/ssh/sshd_config
>
>
> On Wed, Dec 14, 2011 at 7:09 PM, Jeff Donaldson 
> <jdonaldson at ncs.k12.de.us <mailto:jdonaldson at ncs.k12.de.us>> wrote:
>
>     So it seems the thin client console can ssh to any other server in
>     less than a second, but if I try to ssh from the thin client
>     console back to the ltsp server that it booted it's image from it
>     takes 30-35 seconds. I suspect that this is hitting a timeout and
>     causing authentication to fail. Question is, what would cause the
>     thin client to be so slow talking back to the server it booted
>     from? Any ideas?
>
>
>     -----Original Message-----
>     From: "Donaldson Jeffrey" <jdonaldson at ncs.k12.de.us
>     <mailto:jdonaldson at ncs.k12.de.us>>
>     Sent 12/14/2011 5:09:18 PM
>     To: "Edubuntu Users Group" <edubuntu-users at lists.ubuntu.com
>     <mailto:edubuntu-users at lists.ubuntu.com>>
>     Subject: Authentication Issue
>
>     Good Afternoon, I'm having a major issue with thin client
>     authentication. It started just after lunch time today.
>     Authentication works fine from console and on terminal, but ssh
>     takes a very long time to connect. I suspect it is a timeout issue
>     with LDM. From a shell at the thin client I can ssh to any system
>     and authenticate, however this also takes up to a minute for ssh
>     to connect. The response at the GUI login screen is "no response
>     from server, restarting". I've already updated the sshkeys and
>     completely rebuilt the image but this hasn't resolved the issue.
>     How does LDM use ssh for authentication? Is there a reason ssh
>     would have to be routed? Any help is greatly appreciated! Jeff
>     Donaldson Newark Charter School -- Regards, Jeff Donaldson Data
>     Services Manager Newark Charter School (302) 369-2001 ext:425
>     <tel:%28302%29%20369-2001%20ext%3A425> jdonaldson at ncs.k12.de.us
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-- 
Regards,
Jeff Donaldson
Data Services Manager
Newark Charter School
(302) 369-2001 ext:425
jdonaldson at ncs.k12.de.us

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