[X2Go-User] X2Go on submarine control system

[pmb at u.washington.edu]

Michael, I'll do this piecewise.

My X2Go client rev is 4.0.3.0
I have not yet downloaded the debug rev you cite below - will do that next.

Installed Putty (full installer).  Following your directions, I hit Open and then answer No to caching the key (just try once).
The result is a DOS-like window with these 2 lines:

Unable to use key file "C:\Cyclops\data\id_dsa" (OpenSSH SSH-2 private key)
login as:

Just for the hell of it, I did enter the username at that prompt.  But then it asks for a password, which of course I don't have - there is none, which is the whole point of this exercise.

- Pete


On Tue, 13 Jan 2015, Michael DePaulo wrote:

> Windows maintainer here.
>
> 1st, FYI, You do need "Try auto login" disabled when using an SSH key
> file on the Windows client.
>
> 2nd, What version of X2Go Client for Windows are you using? If you are
> using the latest version (4.0.3.1-20141214), you can use a debug
> build. If you can copy the entire command-line output from the debug
> build, great. (A command-line window opens when you launch the debug
> build.) Otherwise, at least tell us the last few/several lines before
> it fails to connect.
> Note that you need to either launch the debug build from the start
> menu / desktop shortcut, or from the command-line with the "--debug"
> argument passed.
>
> Latest debug build:
> http://code.x2go.org/releases/binary-win32/x2goclient/releases/4.0.3.1-20141214/non-default-builds/x2goclient-4.0.3.1-20141214-debug-setup.exe
>
> 3rd, in addition to #2, please try using PuTTY (Windows SSH client) to
> connect to the machine. You'll need PuTTYgen too.
>
> Full installer:
> http://the.earth.li/~sgtatham/putty/latest/x86/putty-0.63-installer.exe
>
> Individual binaries you can just download & run (currently 0.63):
> http://the.earth.li/~sgtatham/putty/latest/x86/putty.exe
> http://the.earth.li/~sgtatham/putty/latest/x86/puttygen.exe
>
> Launch PuTTYgen and import the SSH key by going to: Conversions ->
> Import Key -> select your private key file.
> Then "Save Private Key".
>
> Then when you launch PuTTY:
> specify the hostname/IP
> Specify the port (if you never changed the port, 22 is the default).
> Then: Connection -> SSH -> Auth -> specify the "Private key file for
> authentication"
> Go back to "Session".
> For convenience, give the session a name and click "Save".
> Now click "Open" (to connect.) If you get an error message, please
> tell us what the error message is. If not, enter your username on the
> server. (If you get an error message after you enter your username on
> the server, please tell us what the error message is.)
>
> -Mike#2
>
> On Mon, Jan 12, 2015 at 4:10 PM, Peter Brodsky
> <brodsky at apl.washington.edu> wrote:
>> No joy yet.
>>
>> I generated keys on the linux side:
>>> ssh-keygen -t dsa
>> Copied the public key to "authorized_keys" in ~/.ssh
>> Copied the private key by sneaker-net to the Windows machine.
>> There, I specified the latter (key file) in the field "Use RSA/DSA key for
>> ssh connection".
>>
>> Then tried connecting - can't do it (tries quite a while, then times out).
>> I did try both with and without the box "Try auto login" checked; doesn't
>> work either way.
>> Left the last 2 boxes unchecked.
>>
>> ??
>> - Pete
>>
>>
>>
>> On 01/12/2015 12:39 PM, Stefan Baur wrote:
>>>
>>> -----BEGIN PGP SIGNED MESSAGE-----
>>> Hash: SHA1
>>>
>>> Am 12.01.2015 um 21:00 schrieb Peter Brodsky:
>>>>>
>>>>> X2Go will not work with no authentication at all. However, you
>>>>> can use
>>>>
>>>> a SSH Public/Private Key pair to >authenticate, and assign no
>>>> password to the private key. That way, you can automate the login
>>>> and make things
>>>>>
>>>>> work with a simple double-click on the icon.
>>>>
>>>> OK, indeed it will not work without authentication.
>>>>
>>>> Would like to try the public/private key route.  I've done this for
>>>> ssh agents between linux machines, using ssh-keygen to obtain the
>>>> keys. Not clear how to do so w/X2GO client running under Windows.
>>>> Can you provide some instructions?
>>>
>>> If you have access to a Linux machine, just run ssh-keygen there with
>>> the usual parameters, copy the private key file over to the Windows
>>> machine, and specify it in the session settings (there's a field where
>>> you can specify the path to an RSA/DSA key).  On the Linux box, add
>>> the public key to the authorized_keys file of the user account you're
>>> trying to log in as, and you should be all set.
>>>
>>> If you want to create your key pair on Windows, you will need to use
>>> either ssh-keygen from a cygwin install, or PuttyGen.exe from the
>>> PuTTY tool suite - for the latter, you will need to use the "export"
>>> function of PuttyGen's GUI to save the private key, as PuTTY's own
>>> *.ppk key storage files are incompatible with standard ssh.
> [...]
>