[X2Go-User] X2Go on submarine control system

[Stefan Baur]

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Am 13.01.2015 um 17:35 schrieb pmb at u.washington.edu:
> X2Go not quite there, however.  It gets further(once I specify the 
> Putty-formatted key), but then pops up a window: "Enter passphrase
> to decrypt a key"
> 
> But there is no passphrase.  So I'm stuck there.  Hitting "OK"
> without entering one goes nowhere.

*chiming in here*

@Mike#2, sorry, I hope I'm not sabotaging your debugging attempts. ;-)

@Pete, X2Go does not understand the PuTTY-formatted key.  It wants the
original ssh-keygen generated one.

Something to try would be if there's something odd with your keyfile -
in a way that PuTTY understands it when importing it, but X2GoClient
fails to understand it.
To debug that, I would suggest
a) running PuttyGen.exe again,
b) loading the Putty-formatted key via the "Load" button in the lower
part of the screen,
c) then selecting "Conversions/Export OpenSSH key" from the top menu.
 d) Be sure to save that newly-exported key under a different name,
   maybe x2gologinkey_dsa
e) Set the session in X2GoClient to use that newly generated keyfile.
f) Try to connect.

Please report back the results.


You could also try the following, since you said the PuTTY-formatted
key works with PuTTY itself:
1) Run pageant.exe (also from the PuTTY suite).
   Pageant will appear in the taskbar, next to the clock.
   Its icon is a computer with a black hat.
2) Right-click that icon, select "add key".
   Enter the PuTTY-formatted key there.
3) To verify, right-click it again, select "view key". It should now
   display the key fingerprint.
4) Now, for this test, go into the session config of X2GoClient, and
   set the "Try auto login" again.
5) Save the settings and try to connect.  It should now authenticate
   using the key stored in Pageant.

If this works for you, you could script pageant.exe to load the
keyfile, then start x2goclient afterwards.
I'm actually doing it this way for my customers, though for a
different reason (they use WinSCP to transfer files alongside
X2GoClient, and this way they only have to load the key and
authenticate once).

- -Stefan

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