x2go-user March 2012

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24 participants
46 discussions

Re: [X2Go-User] updated x2go on my ubuntu 11.10 system and it now fails
by brian mullan 06 Mar '12

06 Mar '12

On Mon, Mar 5, 2012 at 7:48 PM, brian mullan <bmullan.mail(a)gmail.com> wrote: > I've had the flu and not been doing much until today when I finally got > back to looking at this problem with ssh & x2go. > > I've found a very good explanation of the error I am receiving after > upgrading my x2go client & servers. > > After entering my password in x2go client (ubuntu 11.10) and click OK I > see... (*sorry for the prev. embedded .PNG crap) !* > The error message displayed to the x2go client user says: > *AUTHENTICATION FAILED - * > > *Access denied. Authentication that can continue: > publickey,keyboard-interactive* > So using google to search I found... > This URL describes the issues with SSH that are involved: > http://fixunix.com/ssh/73976-difference-between-password-keyboard-interacti… > in particular this seems like a very good explanation of the problem... > although I haven't found out how to fix it ?? > > 10-03-2007 04:12 AM #3<http://fixunix.com/ssh/73976-difference-between-password-keyboard-interacti…> > Re: Difference between password and keyboard-interactive > In article <1168327274.938793.197960(a)i15g2000cwa.googlegroups. com> > "Gushi" writes: > >I can't seem to find this anywhere. > > See RFC 4252 (http://www.ietf.org/rfc/rfc4252.txt) which describes (among > other things) the mandatory password method, and RFC 4256 > (http://www.ietf.org/rfc/rfc4256.txt) which describes the optional > keyboard-interactive method. > > >*What's the difference between password auth and keyboard-interactive?* > >They'd seem to me to be the same thing, no? > > Essentially, in password the client sends username+password and gets a > yes/no response from the server, *in keyboard-interactive* the client > sends the username, and then gets prompted (possibly multiple times, > possibly zero times) by the server for additional information, before a > yes/no response is finally sent by the server. > > In the most common usage case, *keyboard-interactive *will prompt exactly > once, for the user's password (well, it will typically re-prompt if the > password is wrong:-), *which to the user looks essentially the same as > password authentication* - the difference is mainly that in the password > case, it is the client that prompts the user, while in > keyboard-interactive, the client just relays the server's prompt (and > relays the response back). > > However *keyboard-interactive* can thus support a variety of mechanisms > besides single fixed password, e.g. challenge-response types where the > server sends some random data, which the user feeds into a hardware token > that generates a response for the user to type in. Being a perfect fit for > PAM that is used on most current Unices, it allows for almost anything that > you can plug into PAM to be used by ssh without any changes to the ssh code. > * > The password method on the other hand is a very bad fit for PAM, which is > why for a while it wasn't possible to combine password and PAM in > OpenSSH's sshd.* In current versions sshd "fakes" the interaction towards > PAM, by internally supplying the password that it has already received when > PAM tries to prompt the user for it. > > --Per Hedeland > per(a)hedeland.org > > > > >

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Problem with X2GO session
by Piotr Mozdzynski 05 Mar '12

05 Mar '12

Hello. I am new to this list , sorry for starting from issues.. we are facing problems with X2go , it crashes X2GO session when we open the Office 2007 "quick access button" This does not occur on direct sessions , only when connected via X2GO. We found this article : http://www.codeweavers.com/support/tickets/browse/?ticket_id=845080; We disabled the registry in Wine , this helped and Office2007 is not crashing , but the buttons are missing and we cannot see hi-lighted text in MS-Word/Excel , several things are missing. Only what I can attach here is a line from syslog (X2go Server) : kernel: [84085.656572] x2goagent[16641]: segfault at 7f0b9dd61ff4 ip 00000000004d3650 sp 00007fff09b8aff8 error 4 in nxagent[400000+4fa000] Anyone had simmilar problems ? I remember before X2go was also crashing on some applications , but after few updates it doesn't anymore. Could not find anything more , any help to resolve this much appreciated. regards Piotr

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x2go on Android with Ubuntu Port
by Mirco Rohloff 01 Mar '12

01 Mar '12

Hello, maybe this could be a way to use an Android Tablet with X2go Client in future http://www.golem.de/news/hands-on-ubuntu-fuer-android-der-linux-desktop-auf… Regards Mirco

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Changing X2Go SSH configuration
by Ivan Hernandez 01 Mar '12

01 Mar '12

Hi list, I have been working with x2go to replace my old freenx/PXE Setup. As I use low end thinclients the cpu used for encryption is not that much powerful so I compiled hpn-ssh and made it work with the none cipher. On tests with scp it made a big difference making a file tranfer to go from 58%cpu and 8.5Mb/sec to 33%cpu and 11.6Mb/sec. So now I have to find a way to tell x2go client to use that ssh client instead of the default one, and with my options. But instead I see fixed options that I can't change like: ssh -x -a -oClearAllForwardings=yes -oServerAliveInterval=300 -oCipher=blowfish So... how can I change that?? Thanks in advance Ivan

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Call logout script
by senrabdet＠aol.com 01 Mar '12

01 Mar '12

Hi All: Is there a way to call a logout script (i.e., one that is specific to each user upon ending a session)? In Ubuntu Server 10.4 we've tried various things including .bash_logout and /etc/gdm/PostSession/Default either performing a command or calling .bash_logout. The "/etc/gdm/PostSession/Default" works if we log in directly, so assume this has something to do with xsession(?) and hope there is a way in an x2go session where when the user logs out, a script gets called in the background. Thanks!

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PyHoca-Gui in Windows 7 - Not working
by Danny Bélisle 01 Mar '12

01 Mar '12

Hi ! I try to run PyHoca-Gui in Windows7 but no chance right now, maybe you known what this trouble can be ? >From pyhoca-gui.exe.log: Traceback (most recent call last): File "pyhoca-gui", line 50, in <module> File "x2go\__init__.pyo", line 168, in <module> File "x2go\guardian.pyo", line 34, in <module> File "x2go\cleanup.pyo", line 35, in <module> File "x2go\xserver.pyo", line 30, in <module> File "wmi.pyo", line 157, in <module> File "win32com\client\__init__.pyo", line 72, in GetObject File "win32com\client\__init__.pyo", line 87, in Moniker pywintypes.com_error: (-2147024882, 'M\xe9moire insuffisante pour cette op\xe9ration.', None, None) Thanks !

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x2go-user March 2012