Authentication Issue

[Marc Gariépy]

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>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>
> Sent 12/14/2011 5:09:18 PM
> To: "Edubuntu Users Group" <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:425jdonaldson at ncs.k12.de.us
>
>
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