X2Go Bug report logs - #1173
stDXFCE_dp24: is blocked

Package: x2goserver; Maintainer for x2goserver is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2goserver is src:x2goserver.

Reported by: Felix B. Müller <felix.b.mueller@gmx.net>

Date: Fri, 5 May 2017 15:05:01 UTC

Severity: normal

Merged with 1174

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Subject: Bug#1173: stDXFCE_dp24: is blocked
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From: Felix B. Müller <felix.b.mueller@gmx.net>
To: <submit@bugs.x2go.org>
Date: Fri, 5 May 2017 16:57:59 +0200
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Package: x2go-server




Dear all,

I have an Ubuntu 16.04.2 LTS (Server) which is integrated in the Windows
Active Directory (AD). The user authentification is done via Kerberos
followed here:



The directories are also mounted automatically every time the user logs on
via pam_mount:

  <volume user="*" fstype="cifs" server="fileserver1"
path="home/%(DOMAIN_USER)" mountpoint="/home/%(DOMAIN_USER)"/>


This works quite nice and I can login via ssh with the user names of the AD.
I also would like to use x2go for the AD users. However, it works fine when
I try to connect to the server (called ssh or ssh2) from the internal
network ( The users get their remote desktops. However, if they
try to login remotely from another subnet the session could not be
initialized. I was looking for the problem the last 3 weeks. Of course the
first idea was due to a misconfigured firewall.

The configuration is as follows:

INTERNET ----- NAT1 -----(  NAT2 ----(


I replaced the firewall, I put the PC (ssh-server) directly after the NAT. I
had a look in all network connections with wireshark. I opened all ports.
None of these things solved the problem. However, I can login with a local
user (user account on the ssh-server) on the ssh-server but not with a user
of the AD (username test01). I set the logging to the debug mode and I see
that a file is always blocked. I do not understand why this file is blocked
if I login from another subnet. Maybe this is not a bug – I do not know and
I do not understand this behavior.


May  5 16:08:41 ssh2 /usr/sbin/x2gocleansessions[1717]:
test01-50-1493993318_stDXFCE_dp24: updating session status from 'R' to 'F'.

May  5 16:08:41 ssh2 /usr/sbin/x2gocleansessions[1717]:
test01-50-1493993318_stDXFCE_dp24: is blocked.

May  5 16:08:41 ssh2 /usr/sbin/x2gocleansessions[1717]:
test01-50-1493993318_stDXFCE_dp24: adding to finished list.

May  5 16:08:41 ssh2 /usr/bin/x2goumount-session[11035]: x2goumount-session
has been called with options:




Best regards!

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X2Go Developers <owner@bugs.x2go.org>. Last modified: Wed Apr 17 15:57:37 2024; Machine Name: ymir.das-netzwerkteam.de

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