CentOS 5 :: FreeNX Server Configuration?
Nov 10, 2009
Also, I would like users to authenticate against using LDAP rather having created manually in the NX server. I installed using yum install freenx nx and rename the node.conf.sample to node.conf and installed the windows client. but when I am trying to conenct the nx server it says it is connected but it gives me NX> 202 Authenticating user: nxNX> 208 Using auth method: publickeyNX> 204 Authentication failed.I have change this nx user in sshd_config file to user that i created using nx server command which exists in local machine.
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Jul 28, 2009
Sorry if this is in the wrong group but its a bit of an odd one but I think comes under Server Support.. I've set up both x11vnc and freenx in an attempt to eliminate either as a cause for this issue. The problem is that when I log in with either, I can get into the desktop and run things from the menus but when I make the System menu active - the session hangs and you have to killall for the freenx or vnc processes.
I was wondering if anyone might be able to help me investigate this and hopefully fix it as I'm not sure where to look given that both types of remote connection seem to have the same issue.
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Jun 9, 2010
I've created a brand new CentOS 5.4 (Final) 64bit machine AMI on Amazon EC2. This was based off an existing image. I was able to follow the wiki to add NX server. I am using WIN XP desktop for NX client.
I can connect to the EC2 machine and get the GNOME desktop fine. I see the usual CentOS desktop and poke around.
Q/Problem:
I expected to open the Terminal window and get a shell prompt to su into root user (I need to be root to install some software that needs GUI). I do not want to install this from my plain SSH connection to EC2 (hence the NX server etc.).
When I open the Terminal window, all I get is the NX>105 prompt. I need to get to a shell prompt so I can su into root. For life of me, I cannot get around this prompt (I looked at NX documentation too). Note that this is a prompt NOT on client but on the remote machine. I do not need this as I'm already authenticated and logged in to remote GNOME desktop.
Obviously the TERMINAL is running some NX start up script (I've no idea which one). If there is some other way to sudo into root?
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May 31, 2011
I have VNC working but I like how freenx starts in it's own session. It is handy for when my account is not logged into the server and VNC hasn't started.I have freenx working but it requires sshd_config to enable PasswordAuthentication. This isn't a major security problem at the moment since I have deny.hosts running but I still don't like it enabled. I would much rather only use the keys.
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Apr 19, 2010
I have a Debian VPS running Lenny and I'm trying to setup a way to run remote desktop sessions from it. I went with FreeNX, NX client for windows from nomachine, XDM and xfce4. All seems to have installed well, but I can't start an NX session on my box. I can connect to the server and authenticate, but the client hangs on "Downloading the session information," eventually timing out. The log output is below - I'm not even seeing an error message. Any ideas?
[Code]...
The only thing I noticed during install, which was about 400 packages since this was a barebones VPS, was that I should consider recompiling the kernel with CONFIG_SOFTWARE_SUSPEND=y. I don't know if this has any impact on session information, however, since this is a new session, not one I'm trying to resume.
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Nov 10, 2009
After making many updates via pup, including FreeNX, my FreeNX installation has broken. It worked flawlessly before the update. Now when I try to connect my client connects, I see the NoMachine splash screen and then I lose the connection with the following details:
Info: Display running with pid '3404' and handler '0x1a037e'.
NXPROXY - Version 3.1.0
Copyright (C) 2001, 2007 NoMachine.[code]......
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Feb 12, 2010
I am usually the last one to post on forums, but I can't for the life of me get FreeNX working on my CentOS box. I have also read many posts, many how-to's, many troubleshooting guides, and absolutely nothing is working for me. It's Crazy. First of all, I've installed FreeNX before, with little to no trouble. I am not completely green at the linux command line, but I am still no expert. I'm hoping one of you guru's out there can lend me a bit of a hand.
Here goes, I've installed FreeNX onto my CentOS 5.4 dedicated box, using the how-to [URL].. I've done everything, letter by letter, on the how-to. (Installed CentOS, configured sshd_config, added users in AllowUsers, created nx user, imported keys.. etc) At this point, I could not connect to my box, with the error message:
NX> 203 NXSSH running with pid: 336
NX> 285 Enabling check on switch command
NX> 285 Enabling skip of SSH config files
NX> 285 Setting the preferred NX options
[Code]...
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May 23, 2011
we are going to implement a virtual environment and I would like to install freenx on a virtual machine.
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Oct 17, 2010
I followed the instructions at [URL]se...nxsetup.tar.gz.Here is where I get stuck:
Code:
$ sudo /usr/lib/nx/nxsetup --install
------> It is recommended that you use the NoMachine key for
[code]....
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Aug 17, 2010
Currently I have successfully setup a server as remote freenx-server terminal and I may login to this system using local users.
As I want a central ldap based user management, I have setup a working ldaps configuration. I am able to login as a ldap user via ssh.
Now the strange issue I am facing is that the freenx-server won't let me login to my server anymore when I enable the following setting in /etc/ssh/sshd_config:
Code:
UsePAM yes
Naturally if I disable UsePAM, ldap based logins will fail because they are passed through PAM.
uname -a:
Code:
Linux srv01 2.6.26-2-openvz-amd64 #1 SMP Thu Feb 11 01:40:09 UTC 2010 i686 i686 i386 GNU/Linux
my sshd_config:
[Code].....
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Feb 28, 2010
I've been working on getting NoMachine and FreeNX working together ... and they're both working well, listening on different ports (guess I should write a howto). At some point I decided to write an init script to control FreeNX behaviour (start, stop, status, setup), since the Ubuntu version has one (called freenx-server) and openSUSE doesn't, but I noticed that it was not necessary, as FreeNX got started automatically... but how ? I could not find any init.d script or command which would start the FreeNX server. Indeed it wasn't actually running :
Code:
neelix:~ # /usr/bin/nxserver --status
NX> 100 NXSERVER - Version 3.2.0-73 OS (GPL, using backend: 3.2.0)
[code]....
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Jan 14, 2010
I have been messing around with freenx to see if I can support my customer via remote desktop... I have installed the server on Ubuntu Karmic and the client on Windows 7. I love linux but need the windows computer for customer work and that is why I chose to install the client on windows. I setup the server the best I could and created custom keys which I then copied to windows and imported them to the freenx client. I am looking for security for my customer and that is why I chose custom keys... There are several issues to deal with but I want to just get started to see where it takes me. I added the test server computers ip address to the freenx client configuration and tried to connect to Ubuntu... I have left the port as 22 at the moment
Desktop setting on the client...I chose vnc which seems to be a good choice according to all the material I have been reading....Other settings I have left alone at the moment to see how things work.... All that said - I have the login window asking for information... I have the password asking for information....and I have the session wanting information....? Obviously I understand that login info can be set on the server and the password...but I haven't seen how to set up that? Of course I am testing the server from a client on my home network at the moment - but the customer has his own router as do I so those settings will need to be looked at as well.
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Feb 18, 2011
I have installed nomachine on my windows 7 laptop and when I connect to the server I receive the error message:
"Authentication failed for user [username]"
Which user am I supposed to log in with? Is it the same user as I use on the server or is this a separate nx user? When I receive this message is it because of the user or the ssh key I use?
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May 2, 2010
I am trying (desperately) to setup freeNX so that I can access my Mandriva box from my Macbook over my network. I have great need to be able to do this. Here's the necessary info for you: Mandriva PC: running Mandriva 2010.0 with freeNX installed from the Mandriva repos Macbook: running OS 10.4 with the Nomachine NX Client installed Now, I have followed the setup from the Mandriva wiki as well as the freenx wiki to no avail. I simply cannot connect the Macbook's NX client to the server. I get an authentication failed message. However, I can ssh from the Macbook to the server just fine (that's how I'm getting most of this work done).
[Code]...
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Sep 24, 2009
I just tried FreeNX. I work great. I am thinking about uninstalling the vino/vnc on my machine.
However, I'd like to know if FreeNX can access the session that open locally on the server. I tried session 0 and 1, none of them can access the local session.
For default vnc, the connection will let you access the local session on the server. Can FreeNX do that?
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Feb 24, 2010
I am not exactly newbie with GNU/Linux, but definitely new to SSH/NX stuffs. I followed the below tutorials for installing FreeNX so that I can access my desktop like TeamViewer in windows.
https:[url]....
https:[url].....
But I don't see the folder NX like the one mentioned here.Then edit the file /usr/NX/etc/server.cfg
I don't see a folder called NX to proceed. Also when I use nomachine client to connect from Windows, it couldn't connect and I get the below errors.
nxssh: <host-name>: no address associated with name.
how to make connect to freenx server from windows using nomachine client?
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Jun 15, 2010
How to setup Ldap Service in RHEL5/CentOS5?
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May 13, 2010
give the details to install and configure qmail step by step.I am using CentOs 5.
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Sep 14, 2010
The DNS server configuration for CentOS and RHEL5 and the entries for the clients in its configuration files...
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Aug 5, 2009
I have been trying to get procmail working on CentOS 5.2. I don't need anything fancy, just an auto reply for a "noreply@" account. Looking at the sendmail configuration, it appears procmail is the MDA. I have looked at many different tutorials and how-tos, but most are old, and/or the locations/paths and setups are markedly different from the defaults on my system. Can anyone recommend a good CentOS-based tutorial on Procmail w/ recipes? (I have an RHEL book and it's no help either.) Thank you for your time and consideration.
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Nov 5, 2009
I have messed around with yum config files & my system is not updating anymore! is there is a way to reset yum configuration to its default?
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Jun 28, 2010
I'm configuring a new public mail server running Centos 5.5 and Sendmail 8.13.8. I would like that the sendmail configuration is correct. The server will handle many domains using Virtualmin. Everyone can send mail only if authenticated, which I already tested.
How can I upload configuration file? I receive an error if try to upload a zip file.
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Aug 16, 2010
CentOS 5.5 + Apache 2.2(httpd.conf) + SSL confiuguration(ssl.conf) gives following error in FireFox.Secure connection failed.An error occured during a connection to localhost.SSL received a record that exceeded the maximum possible length.Errorcode:s_error_rx_record_too_longThe page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
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Feb 21, 2011
yum installation and configuration in details on Redhat / Centos 5.0
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Apr 12, 2011
today i encountered centos 5.5 final server with a squid configured to block facebook from 9am to 4pm. i have tried to follow up the steps but am stack where time restriction is done and there is no proxy configuration done in the browser. the ip address of the server is being used as the default gateway.
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Feb 23, 2010
how to change CentOS 5.3 GNOME Desktop to KDE without effecting others configuration?
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Jul 4, 2009
I have a fresh installation of CentOS 5 I'm using for a server, and I'm having issues with port configuration. I have iptables running, and it started with no /etc/sysconfig/iptables file. I added a few basic rules (port 53, port 10000 for webmin), saved the file, and restarted the service. I tried connecting to webmin, scanned ports, and traffic was blocked. I set iptables to allow all traffic and restarted the service, and it still showed basically every port as being blocked. It seems port 80 and port 22 work for some reason, even when I tell iptables to block all ports.
I'm not sure what's going on here. Iptables is reading the /etc/sysconfig/iptables file, and if I use lynx localhost:someport it responds as it should according to the file. However, if I try connecting by IP, it's like there's some other firewall or something running that does whatever it's configured to do.....
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Aug 24, 2009
I'm having an issue with an e-mail server (with an IP of 10.10.0.1) which is behind NAT (Cisco ASA) which in turn of course has it's own external IP (let's say - IP 10.10.0.100). Both IPs are public.Now, if i wanted to set up a correct RDNS configuration for my domain, what should be the IP address entry for the PTR record in this case?
I know this is strictly network configuration related question (not Linux, or CentOS for that matter), but I wouldn't be asking if I didn't get a few bouncing e-mails every once in a while (i.e. NDRs) with messages like: You do not have permission to send to this recipient. For assistance, contact your system administrator.
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Dec 29, 2009
I was reading over and checking the How to section on the Wiki for Postfix TLS / SASL. I followed it completely and everything seems to be working fine however I am confused about the following section:
smtpd_tls_security_level = may
smtpd_tls_key_file = /etc/pki/tls/private/mail.example.com.key
smtpd_tls_cert_file = /etc/pki/tls/certs/mail.example.com.cert[code].....
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Oct 12, 2010
I have a Centos 5.5 and we make remote connections with Xfree from Windows to the Linux Server. We start the Xsession with the option -clipboard, but it's not working. Which settings do I have to change in the server configuration that the clipboard works in the Xsession?
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