Fedora :: Connecting To A Remote XDMCP?
Jun 25, 2009
on Debian/Ubuntu in the login form (i suppose it's "gdm") from the bottom right corner I can pick the option to login to a remote XDMPC desktop (that of course I enabled on the other side..) the network is checked for those open XDMCP service and finally, the login box appears and i can remotely login to a "graphic terminal".
How can I do the same in Fedora? I found some guide about Xnest, Xzephyr, but I was totally unable to find a way for doing this simple task.
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Jun 16, 2010
I am going through cygwin's XWin.exe (XWin - queary <hostname>) to start a remote session with a RHEL 5.5 workstation. I have run gdmsetup on the worksation to allow the remote connection. Starting the remote session goes off without a problem. After about two hours, it just exits and I have to start over. This is a problem since all my gui's are killed and I have some important processes running.
/var/log/syslog/messages shows:
Jun 15 16:49:53 <host> gconfd (root-12016): SIGHUP received, reloading all databases
Jun 15 16:49:53 <host> gconfd (root-12016): Resolved address "xml:readonly:/etc/gconf/gconf.xml.mandatory" to a read-only configuration source at position 0
Jun 15 16:49:53 <host> gconfd (root-12016): Resolved address "xml:readwrite:/root/.gconf" to a writable configuration source at position 1
[code]....
There must be a 2 hour timeout set somewhere - maybe in a gconf xml file?
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Jul 17, 2015
I'm trying to get an laptop running more or less like a headless server, my reasons are not all that serious. Mostly I want to leave the laptop running as a seed box when my main PC is turned off, also want to setup it up as a media top, common place for media files and playback on Tv. So essentially I want to be able to access the remote machine, preferably sharing the same session and persisting while I log out from remote.
What I've done:
setup keys for ssh to connect automatically between machines, so I can login via terminal, access the file system without issues, which is already a great step. enabled remote access on remote machine lightdm manager setup deluge for daemon torrenting, which enables almost seamlessly client to connect remotely (though deluge is not the best with speed)
What I've tried so far:
Connect directly with a new X session
Code: Select allX -query your_server_ip :1
Works alright, creates a new display (:1) which is oddly in F2 tty instead F8 as is expected. Works alright, not much lag, audio is not routed.
But an issue! whenever I decide to log out X will simply shutdown, screen goes black and I can't resume on my regular session on my local machine.Connect X with nested Xephyr session
Code: Select allXephyr -query your_server_ip -screen 1280x1024 :1
This works too and might be the best solution yet, a windows is created and the remote session is nested in your current X session. Visual and performance is ok. Only real issue is that session is not shared, eg, application will not remain running...Connect via VNC
So it seems only solution for shared sessions is VNC.
With the remote desktop apps from KDE (which is the DE for both), I can connect buzz around and etc, but its kinda cumbersome and laggy, password always resets and I usually need to accept on the remote machine.
I've tried setting up lightdm to allow a vncserver at logon, but this is erratic at best, took a long time to get the Xvnc command correct enough for me to login remotely, and even then got a garbled screen and the X session wasn't even the same...
So that's it... Isn't there a way of regular X session sharing in the remote computer? Or a better solution for lightdm vnc invoke?
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Nov 8, 2010
on a openSUSE-11.3 how do I configure lxde so I can access it via a remote XWindow server via xdmcp?
Entry /etc/sysconfing/displaymanager:
DISPLAYMANAGER="lxdm"
DISPLAYMANAGER_REMOTE_ACCESS="yes"
Entry in /etc/sysconfig/windowmanager:
DEFAULT_WM="startlxde"
[Code]...
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Mar 16, 2010
I've been used to using RDP on Windows to remote to machines, and I've got an asus eee 701 which I want to use to do some *nix programming on. While the eee is a lovely little machine the screen and keyboard are a little small to use for lots of programming. I've tried using Xming (the free version) to remote login into the eee from my desktop using XDMCP (or even using a ssh session as a straight X11 server and no desktop on the eee) the whole thing seems seriously slow over wifi the initial desktop takes at least 5 seconds to paint (might even be 10 seconds I haven't actually timed it). So my real question is what do other folks use for remote control with a GUI for their *nix boxes? I am finding it hard to believe the performance is so bad over a wifi network (It makes the Mac IIs I used to use a college in 1988 seem fast) or is this just a problem with Xming and using say the Cygwin X11 server would be better.
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Nov 30, 2010
I need to setup a xdmcp server on ubuntu 10.10 to allow for remote connections. Obviously this cant be done from the login window as with previous versions of Ubuntu.
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Apr 3, 2011
I use XDMCP from an old laptop to login remotely to another computer which is running Debian 6. This seemed to work fine in Debian Lenny, and the laptop screen would switch off after a period of inactivity as I expected. Now the laptop screen blanks after inactivity, but the backlight never switches off.
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May 5, 2011
To be sure that the remote desktop was working, I tried from home, where I have both the laptop I want to connect to and the laptop from which I make the connection. It worked without any problem, but now I'm trying to connect from my work place and it's not working anymore. Both are connected to the same VPN, so I don know where the problem comes from.
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Jun 14, 2011
Has anyone noticed ABRT not being able to connect to Bugzilla or the remote Core Dump analysis server? Since my upgrade during the beta phase of F15 I have been unable to file bug reports from ABRT's traces, nor has it offered me the option to file bugs to bugzilla. What it does, however, is offer me to analyse the Core Dump and backtrace of the crash using either the remote server or locally with GDB. Needless to say I'm clueless in GDB, and it requires a LOT of debug symbols found in the corresponding debug packages. But trying to use the remote analysis server always results in a message of the server being busy and to try again later. IIRC the last time I was able to file a bug through ABRT was in 13, has anyone been able to do so in 15?
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Feb 21, 2010
This applies to GDM as well, but I'm using KDM right now so:
Linux 2.6.31.12-174.2.19.fc12.x86_64 #1 SMP x86_64
I setup XDMCP:
/etc/kde/kdm/kdmrc
[Xdmcp]
Enable=true
Willing=/etc/X11/xdm/Xwilling
Xaccess=/etc/X11/xdm/Xaccess
[security]
AllowRemoteRoot=true
DisallowTCP=false
/etc/kde/kdm/Xaccess (link to the xdm 'xaccess' file) includes:
* CHOOSER BROADCAST
In KDM settings I set it to 'no theme' and 'no custom background'. IPTables & SELinux are both off. The client & server are both on the same switch. I can connect successfully. But all I get is a black screen & an X cursor, never get to see the login prompt. Most things I find have to do with the inability to connect at all, but this connects. I'm having this problem on RHEL5.4, CentOS5.4, & Fedora 12. I'm troubleshooting it on Fedora though. I'm not able to even log in.
I must point out that for CentOS5/RHEL5 I got this working, but I didn't do anything differently that I know of. I just repeated the same process over again....but I'm using GDM on those. Is it possible that I may have to use GDM for KDE because it works with GDM? I'd like to get KDM working because that's what it's designed to do right? work the way it's configured. I've not had a chance to look into it with KDM since the time that I posted this thread.
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Jul 22, 2010
How can I manage to avoid double login to a user account in the server by remote users? Is there a way to block it or to hide logged user accounts?
I have two server, one f12, the other f13 (behind a firewalled router) and want them to serve desktops to anybody in the local network. User accounts in both servers are established as username: user1 password: user:1 , username: user2 password: user2 ....... Every remote user should take an available user on server but no multilogin to the same user. Remote users are no adult so they can mistake. That's the problem. On the remote dektop section unmark everyone can see my desktop didnt help.
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Nov 10, 2010
I've been working on this since last night (a few hours) but can't seem to find what I am looking for. I'll spare you the details of what I've tried already.
Could someone guide me through connecting to my Ubuntu server using a remote X session? The "kicker" is that I want to do this from a Knoppix LIVE CD. So whatever method I am given will have to be something that is common to most Linux distros.
I imagine I will need help with two important steps:
1) verifying that I have an xserver of some kind running on my server.
2) command line statement for starting the Xserver from the remote machine.
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Jul 22, 2011
Is it possible from Ubuntu Linux to remote desktop into any Windows Server through RDP ? I've tried using TightVNC it works from within the internal LAN but this is connecting from my home PC with Ubuntu over CISCO VPN client.
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Jun 19, 2010
Like ssh for linux,is there any way to connect to remote windows machine.
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Jun 4, 2010
I manage a few Linux servers and I need a fast way to connect to these servers instead of having to enter the root password every time.
Is there anyway to save the passwords/keys and connect to the servers by simply typing: SSH user@ip
Or even something easier without typing the server IP like I had Putty in Windows. I know I can still use Putty but I want to use a better SSH client, like GNOME Terminal.
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Jan 24, 2011
When ever i run ssh -p <port> <user>@<remote IP>, i get a connection has timed out error. (i use the -p <port> part because i'm using a custom port). does anyone know what could be causing this? i know of a few *possible* problems, but i don't know how to test them all.
- I am on the same network as the server (I'm trying to test using remote IP to make sure it works before i go out an try it somewhere else)
-The router could be blocking it (i'm using linksys)
-IPtables may not be set up right (i think it is though. the only thing i've run is "sudo iptables -A INPUT -p tcp --dport ssh -j ACCEPT". I have changed the port for the server since then. maybe i have to restart it or something for it to recognise the change? I know very little about IPtables though).
-maybe i have to change something in my client or server config files? (the only config file i've changed is the sshd_config file on the seerver, and that was to change the port to my custom port).
thats all i can think of for now. It may be none of those. I do have the sshd_config and port forwarding in my router set to the same port, so thats good.
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Jun 7, 2010
I am fresh out the box to linux I am using mysql for the 1st time also, my question is what is the correct command to run on a mysql command line to connect to remote server.
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Jan 27, 2010
How to connect to remote oracle database using perl?
This is what I tried.
Code:
But I am unable to connect.
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Nov 21, 2010
I am working on a project where I need to connect to a remote MS SQL Server database with PHP from a CentOS 5.5 server. I was able to get it installed and working on my Mac OS X 10.6 laptop with unixODBC and FreeTDS. However, I am unable to get it configured on my CentOS server. unixODBC and FreeTDS were installed, but when I try to connect, I get the following error message:
Connection Failed:[unixODBC][Driver Manager]Can't open lib '/usr/lib/libtdsodbc.so.0' : /usr/lib/libtdsodbc.so.0: wrong ELF class: ELFCLASS32
From what I could find by scouring the internets,it appears that I have 32 bit unixODBC (or FreeTDS, I'm not sure) installed (libtdsodbc.so.0 is symlinked to libtdsodbc.so.0.0.0) and it needs to be 64 bit. However, when I try to install the 64 bit version with
yum install freetds.x86_64
I get a message that it is already installed.Is there something else I need to do to get around this error? I'm a developer and not a server, so I'm not sure where else to go.
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Feb 13, 2011
I am not able to connect to remote server through secureCRT . my local team has said that server is working fine . but I am not able to connect it remotely . what more i can do to connect it to server
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Mar 20, 2010
I am using Fedora 12 and i have enable XDMCP i have boot client with dhcp all is going well but when remote user logout than remote client display XDMCP: fatal error: Session declined Maximum number of open sessions. and after that i have reboot Fedora 12 server than it will work but after logout it will again create same problem.
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Sep 15, 2010
We're using both SuSe and RHEL servers. Our servers are running behind firewall device and remote root login is disabled in SSH.
We're using NAT.
Remote client connections including failed logins are logged into the /var/log/messages but what is logged are gateway ip of our LAN - the LAN IP of Firewall device.
How can I logged the external or public IP of the remote client?
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May 13, 2010
I want to run a system that acts as a basic file server, I want to remove the graphics card for the sake of power saving and less heat in the box. My machine can boot without the GPU, and I can ping it and use putty to do things, but I'm still new to Linux and don't really know what I'm doing so GUI is best for me atm.
From somewhere I picked up that this is possible (the XDMCP server machine can have no GPU). This post here [URL].. seems to be what I am looking for, but I don't know how to "convert" these instructions to Ubuntu (the files mentioned do not exist on my install anyway).
[Code]...
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Jun 20, 2011
I'm on a private network and would like to have XDMCP turned on so different users can access the system with a greeter and log in to their own desktop.To test if this works, I've tried 'Xnest :1 -query localhost' - which on other _nix systems will bring up the greeter, then I know that all I have to do is deal with firewall issues, etc. On Ubuntu 11.04 I just get a blank screen.I've seen others asking for help with XDMCP, and the answers are to use VNC, which from my experience allows you to _share_ the current desktop, not create a new one for a different user to use at the same time. If I am mistaken please let me know.So, any ideas on how to get XDMCP up and running on Ubuntu 11.04?
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Jun 13, 2010
I heard that window managers like xdm, kdm and gdm etc use xdmcp protocol which is inherently unsafe. Now I have an Xclient that has to be displayed on multiple Xterminals. Can I do this without gdm/xdmcp. Shouldn't the regular X work in this case. What exaclty is the purpose of gdm/xdmcp on top of X. So if gdm provides the complete desktop manager, does this mean it is unsecure since it uses xdmcp?
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Jun 17, 2010
I always notice that xdmcp always runs on my system. I don't want it to. These are my settings and I tried to reboot. xdmcp still runs. How do I stop it once for all.
/etc/sysconfig/displaymanager
DISPLAYMANAGER="kdm"
DISPLAYMANAGER_REMOTE_ACCESS="no"
DISPLAYMANAGER_ROOT_LOGIN_REMOTE="no"
[code]....
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May 6, 2011
I had Xming working great with XDMCP on my Debian 6 server at work. I had to replace the UPS and when I brought the machine back up xming/XDMCP no longer worked correctly. When I launch Xming and connect to XDMCP session I get the Xming window, the X Cursor but the GDM login window never appears. So I am getting some level of connectivity. The only change that was made to the server was that OpenVPN service was turned on. I do not know if this is the right log to be looking at but /var/log/gdm3/:0-greeter.log has this in it a number of times:
(polkit-gnome-authentication-agent-1:2252): polkit-gnome-1-WARNING **: Error enumerating temporary authorizations: Remote Exception invoking org.freedesktop.PolicyKit1.Authority.EnumerateTemporaryAuthorizations() on /org/freedesktop/PolicyKit1/Authority at name org.freedesktop.PolicyKit1: org.freedesktop.PolicyKit1.Error.Failed: Cannot determine session the caller is in
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Jun 25, 2010
We have a lab at our school that has DevonIT thin clients. We want to connect to Ubuntu via xdmcp or freenx from these clients, and we want users to be able to connect to our Novell file server from these clients. I can't find instructions on how to install the client, which I found at KDE-Apps.org. It is a tar.gz file. I'm not new to Linux, but rarely install apps from source. Could someone walk me through it, keeping in mind I do not use the command line much? [URL]..
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Jan 5, 2011
I'm trying to use xmms (or any other audio player) lauched from a remote computer but playing locally. I have a maverick server which has xmms installed. I launch an xdmcp (starnetssh) from a windows machine and I am able to open terminals, panels, emacs, etc but when I open xmms (or MOC, is the other one I tested), it simply doesn't play anything unless the same user is logged on the ubuntu box.
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Feb 17, 2010
I have one Linux PC installed with Suse 11.1. In this I have created three users to get access.
Users able access their login from Windows PC via some utilities.
1. Putty
2. Xming
Users able login using both. With Putty there is no GUI. But with Xmings XLaunch they are able to get similar session as Linux Host PC. At this point of time the host linux PC will become too slow in perfarmance.
How to retrict the users not to open similar session by enablin/disabling some setting in Linux PC?
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