X2Go Bug report logs - #290
SSH key based authentication problems

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Package: x2goclient; Maintainer for x2goclient is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2goclient is src:x2goclient.

Reported by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Date: Tue, 27 Aug 2013 10:48:02 UTC

Severity: important

Tags: confirmed

Found in version 4.0.1.0

Full log


Message #5 received at submit@bugs.x2go.org (full text, mbox, reply):

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Date: Tue, 27 Aug 2013 12:34:01 +0200
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: submit@bugs.x2go.org
Subject: SSH key based authentication problems
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Package: x2goclient
Tags: confirmed
Version: 4.0.1.0
Severity: important
x-debbugs-cc: software@matthiaskauer.com

I myself have also observed the issue reported by Matthias. Adding  
this as a bug. This should get fixed before the release of 4.0.1.1.

Mike

----- Weitergeleitete Nachricht von software@matthiaskauer.com -----
     Datum: Mon, 26 Aug 2013 23:54:55 +0200
       Von: Matthias Kauer <software@matthiaskauer.com>
   Betreff: [X2Go-User] Login via ~/.ssh/authorized_keys fails
        An: x2go-user@lists.berlios.de

Hi,
I am looking for input on how to set up an ssh key-based authentication.

I generated an RSA key pair with puttygen and added it to
~/.ssh/authorized_keys2 => confirmed that I can login with putty.
Now, I specify the same private key in x2goclient (windows). I enter my
password and I am then prompted for the password of the ssh key. I enter
it and the same ssh key password prompt reappears. This seems to be an
infinite loop. When I cancel it, I get a message saying that only
publickey is supported as login method (which corresponds to my
sshd_config settings).

I then tried renaming ~/.ssh/authorized_keys and using a DSA key pair.
putty still works as expected with both of these alternatives.
x2goclient still shows the same problems however. It only lets me login
if I adapt my sshd_config and authenticate via user / password combination.

Is this a known limitation?
What is the best way to achieve high security? Can I limit the x2go
connections to only LAN IPs (without restricting the pure ssh connections)?

Best Wishes,
Matthias Kauer
_______________________________________________
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----- Ende der weitergeleiteten Nachricht -----


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