[Bio-linux-dev] x2go problems

[Tim Booth]

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)?

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

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.

Where does that get you?

Cheers,

TIM

On Thu, 2015-04-23 at 11:22 +0100, Tony Travis wrote:
> Hi, Tim.
> 
> I've recently had problems connecting to my Bio-Linux workstation
> "wildcat" via an SSH proxy using "x2goclient". The problem is not
> confined to "wildcat". Attempting to connect to other Bio-Linux
> workstations via the same SSH proxy yield the same error:
> 
> > kex error : no match for method server host key algo: server [ssh-rsa,ssh-dss], client [ecdsa-sha2-nistp256]
> 
> Direct connections (i.e. not using a proxy) all still work fine and I
> can "ssh" through the proxy to "wildcat" without any problems.
> 
> I was using the latest PPA version of "x2goclient", but I downgraded it
> to the current Ubuntu 'stable' version in case that was the problem:
> 
> > ajt at beluga:~$ apt-cache policy x2goclient
> > x2goclient:
> >   Installed: 4.0.1.1-1ubuntu2
> >   Candidate: 4.0.1.1-1ubuntu2
> >   Version table:
> >  *** 4.0.1.1-1ubuntu2 0
> >         500 http://gb.archive.ubuntu.com/ubuntu/ trusty-updates/universe amd64 Packages
> >         100 /var/lib/dpkg/status
> >      4.0.1.1-1ubuntu1 0
> >         500 http://gb.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
> 
> It wasn't...
> 
> Any ideas?
> 
> Thanks,
> 
>   Tony.
> 

-- 
Tim Booth <tbooth at ceh.ac.uk>
NERC Environmental Bioinformatics Centre 

Centre for Ecology and Hydrology
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Crowmarsh Gifford
Wallingford, England
OX10 8BB 

http://environmentalomics.org/bio-linux
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