[Bio-linux-dev] x2go problems

[Tony Travis]

On 23/04/15 12:07, Tim Booth wrote:
> Hi Tony,
>
> It would help to know where this message is coming from.  Something
> wants an ECDSA host key and something doesn't have one.  However, either
> of these two somethings could be the client or the server or the proxy.
> Can you please look and see what the wildcat log says (sshd logs to
> auth.log)?

Hi, Tim.

It came from my "x2goclient" session admin window (screenshot attached).

Looks like the proxy doesn't have an ECDSA key:

> proxy% ls -rtl /etc/ssh
> total 204
> -rw-r--r--   1 root     sys          861 May 24  2005 ssh_config
> -rw-r--r--   1 root     root         231 May 24  2005 ssh_host_rsa_key.pub
> -rw-------   1 root     root         887 May 24  2005 ssh_host_rsa_key
> -rw-r--r--   1 root     root         611 May 24  2005 ssh_host_dsa_key.pub
> -rw-------   1 root     root         668 May 24  2005 ssh_host_dsa_key
> -rw-r--r--   1 root     sys         5108 May 15  2009 sshd_config.20090807
> -rw-r--r--   1 root     sys         5108 May 15  2009 sshd_config
> -rw-r--r--   1 root     sys        88308 May 15  2009 moduli

However, mt laptop "beluga" does:

> ajt at beluga:~$ ls -l /etc/ssh
> total 296
> -rw-r--r-- 1 root root 242091 May 12  2014 moduli
> -rw-r--r-- 1 root root   1690 May 12  2014 ssh_config
> -rw-r--r-- 1 root root   2489 Jun 28  2014 sshd_config
> -rw-r--r-- 1 root root   2489 Jun  5  2013 sshd_config.orig
> -rw------- 1 root root    668 Jun  5  2013 ssh_host_dsa_key
> -rw-r--r-- 1 root root    601 Jun  5  2013 ssh_host_dsa_key.pub
> -rw------- 1 root root    227 Jun  5  2013 ssh_host_ecdsa_key
> -rw-r--r-- 1 root root    173 Jun  5  2013 ssh_host_ecdsa_key.pub
> -rw------- 1 root root    399 Apr 22 23:32 ssh_host_ed25519_key
> -rw-r--r-- 1 root root     93 Apr 22 23:32 ssh_host_ed25519_key.pub
> -rw------- 1 root root    976 Apr 22 23:32 ssh_host_key
> -rw-r--r-- 1 root root    641 Apr 22 23:32 ssh_host_key.pub
> -rw------- 1 root root   1675 Jun  5  2013 ssh_host_rsa_key
> -rw-r--r-- 1 root root    393 Jun  5  2013 ssh_host_rsa_key.pub
> -rw-r--r-- 1 root root    338 Jun 28  2014 ssh_import_id

> First thing is, please turn off file sharing in the x2goclient.  In
> fact, to be sure, turn off print sharing and sound sharing too.

Already had print sharing and sound sharing off - Disabling file sharing
just now makes no difference...

> Also, on wildcat, see if there is an ssh_host_ecdsa_key in /etc/ssh/.
> If not, run "sudo ssh-keygen -A" to generate it.  If you have any
> control of the proxy then do the same on the proxy host.

Already did that ;-)

> Where does that get you?

Not sure - Might be my laptop, because connecting via the same SSH proxy
works from "wildcat" to our local HPC cluster.

Thanks for your advice,

  Tony.

--
Dr. A.J.Travis, University of Aberdeen, Institute of Biological and
Environmental Sciences, Cruickshank Building, St. Machar Drive, Aberdeen
AB24 3UU, Scotland, UK. tel +44(0)1224 272700, fax +44 (0)1224 272 396
http://www.abdn.ac.uk, mailto:tony.travis at abdn.ac.uk, skype:ajtravis


The University of Aberdeen is a charity registered in Scotland, No SC013683.
Tha Oilthigh Obar Dheathain na charthannas clàraichte ann an Alba, Àir. SC013683.
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