Ubuntu Networking :: What Is Syntax For SSH Tunnel Host In Remote Desktop Viewer?
Aug 1, 2011
I have succeeded in using Remote Desktop Viewer to make a VNC connection to a remote WAN computer and it was quick enough to manipulate the remote computer in real time.I found the host name by getting the remote target computer to put the following url into a browser - http://www.showmyip.com/ - It returned the address for the router which I put into the Host: text entry box in the Remote Desktop Viewer window. E.g. for my computer at the time of submitting my enquiry the address was 'host81-129-54-226.range81-129.btcentralplus.com'.The remote router that I connected to needed to have the port 5900 forwarded to the remote target computer.I now want to progress to running VNC through a SSH tunnel for additional security. In the Remote Desktop Viewer there is a configuration line
'use host' <text box to enter host name> 'as a SSH tunnel'.What is the correct syntax to enter in the text box? It would help my understanding if you used the example address above as a basis for a response.Many unexpected connection attempts reported on my router, if that was you, thank you for the novel way in responding to the question and providing the syntax.The 'bible' on syntax appears to be found here:- http://unixhelp.ed.ac.uk/CGI/man-cgi?ssh+1
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Nov 20, 2010
I have my main box, Ubuntu 10.04lts, and I am trying to use remote desktop viewer to see the desktop on a Windows XP machine. The machines are side by side The Ubuntu box is hardwired to my network router, and the XP machine is connected via wireless. Both get to the internet fine, and I can ping the Ubuntu box from the XP box. But, I cannot ping the XP box from the Ubuntu box, and Remote Desktop Viewer won't establish a connection to the VNC server I have running on the XP box.
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Sep 18, 2010
I have Lynx, trying to connect to a tightvnc server on a Win7 box on my LAN.
Server IP: 192.168.1.42:5900
The remote desktop window just goes black and pops up a dialog saying connection closed every time.However VNC works fine as I installed xtightvncviewer as an alternative and that connects, and I can view the Win7 desktop and control it and do everything you would expect.
I've also tried connecting using Android VNC viewer from my phone on my LAN and that also works fine so it appears to be an issue with Remote Desktop Viewer.Incidentally using R.D.V. on Intrepid into a tightvnc server on my old XP box worked fine.
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Oct 16, 2010
Have Ubuntu Hardy--- when using remote desktop viewer I log in to remote machine ok, but the screen stays at the first view and won't update. I can move the cursor on the remote machine, get into apps or folders but the remote screen won't update.
The remote machine is Ubuntu Lucid. When I use the Lucid machine to log into the Hardy machine, all is well.
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Jan 15, 2011
is it possible in the standard remote desktop viewer in Fedora 14 to use RDP instead of VNC protocol? I know that Ubuntu provides this feature. I already installed tsclient and rdesktop but that didn't help.Before you say I have to use VNC: I know... I am just curious how I can set up RDP to connect to Windows based machines.
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Sep 1, 2011
When I view a work computer Remote Desktop settings it states that connections are only available to other computers on the LAN.This gives me a terminal window on the work pc2.Is there any way I can start a Remote Desktop session on pc2 through the ssh port forwarded session?
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Mar 1, 2011
Friday night I was working on some networking stuff between my two Fedora 14 boxes. I have my laptop and my desktop. on both machines I have "system-config-firewall 1.2.27" and "iptables" (i believe both come standard on F14?) I kept getting the same message as seen below before realizing perhaps I should check my firewall!
I added a rule for incoming and outgoing traffic on port 22 and was able to get in with no problems at all! however today I can't ssh into anything... I can't use "Remote Desktop Viewer 2.31.4" to vnc into the machine anymore. I can't remember the exact error message at this time, it's something close to "Connection was terminated" or "Unable to connect" I can update this message later.
last night I foolishly uninstalled the system-config-firewall and then uninstalled iptables to see if it was a simple firewall issue.... totally hosed my system <insert smiley!>
After reinstalling and realizing I didn't backup my documents <insert smiley!...again...> I started reinstalling all of my applications. I'm still unable to use ssh and I've tried to ssh my own computer.
Is this possible?
# ssh 127.0.0.1
ssh: connect to host 127.0.0.1 port 22: Connection refused
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Feb 6, 2010
Are there any other programs like remote desktop viewer for linux?
And another question... I'm having problems with connecting ubuntu computer with win7 comp. Adresses are fine, passwords too, but it simply won't connect.
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Jun 8, 2010
Remote desktop viewer has stopped working in ubuntu 10.04. When I click on the icon in the top panel. The message Starting Remote Desktop viewer appears in the bottom panel for about 20 seconds and then it disappears and nothing further happens.
Yesterday I disabled ipv6 which greatly speed up thunderbird email and coincidently solved a problem I was having with Google earth not connecting to the server.
I do not know if this is what is now causing the problem with Remote Desktop viewer.
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Oct 19, 2010
Just installed 10.10 32-bit on a Lenovo T61p laptop, and used Remote Desktop Viewer (version 2.3.2) to VNC into another system. I can copy from an application on 10.10 and then paste into a window in the VNC connection (e.g. to xterm or emacs), but I cannot do the reverse. When I try to paste, I get garbage displayed. For example, I selected "ls -l" from an xterm, which should have copied to the clipboard. When I paste this into an e-mail message, I get junk.
Here is what Emacs in hexl-mode says about that text:
7852 3109 05 xR1..
It shows as "xR1" some whitespace and then a tiny graphical box symbol with 00 and 05 in it. I'll try to paste it on the next line: Is this a known bug? Is there a workaround? Another app I can use?
xR1
This same VNC connection works fine, when I use 10.04.
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Mar 23, 2010
I have a local network in which are two boxes. The first one has Fedora 8 installed and updated regularly and runs an Apache2 webserver. It also has vnc-server activated.
The second one had Fedora 10 installed along with a vnc viewer so that I could access the first box from this one. The first box has the VNC host name of 192.168.1.67:5.
I had had no problem with this VNC setup until I replaced Fedora 10 with Fedora 12. Initially I was happy to find Remote Desktop Viewer had been installed as part of default installation ( Application > Internet ). But it did not take too long before I got disappointed that this thing failed to work.
No sooner had I connected to the remote box than Fedora 12 kills X-server and logs out displaying a login screen. It seems as if I had killed X-server by issuing a keystroke of CTL-ALT-Backspace, which has apparently been disabled in Fedora 12.
Edit: By the way, I am still able to connect to the Fedora 8 box from a Windows Vista box via TightVnc viewer.
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Jan 25, 2011
Whenever I try to open a folder or some other location on disk through any program, I get the Remote Desktop Viewer. For example, if I go to Places --> Home Folder, the RDV opens up and says "the connection to /home/<me>" is closed. It's very odd. I get the same behavior in Chromium if I select "Show in Folder" for a download.
If I go to the terminal and type 'xdg-open ~' or 'gnome-open ~' I also get the Remote Desktop Viewer, just like I do when I select home from the Places menu.
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Nov 8, 2010
I recently did a clean install to upgrade to 10.10 and I also got a 2nd monitor recently after upgrading. I want to be able to connect remotely to my desktop like I used to from my phone, but when I connect I get a black screen the size of my full desktop(both monitors) and I can move the mouse/type.
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Sep 2, 2009
Can someone explain me ipv4 notation like:
192.168.1.0/255.255.255.0
Does it mean "any host on 192.168.1.x" network?
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Dec 30, 2010
host always ask password on 1st remote desktop (VNC) access Desktop version... how can I disable this?
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Oct 20, 2010
I have machine that I used to VNC to on my network with Remote Desktop Viewer from my Fedora 12. When I first connected I checked the checkbox that I wanted to store the pw. Now the pw on the other machine has changed but Remote Desktop Viewer does not ask for a new password, it just gives me a black screen, like I am connected but I can't see anything. I'd like to know if anyone knows where this pw data is stored on the system so I can start fresh. I already tried uninstalling Remote Desktop Viewer and installing it again.
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Nov 30, 2010
Is there a utility or method enabling easier navigation (keyword search, hyperlink etc) or color/syntax highlighting when viewing man pages?
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Feb 5, 2009
have fedora 10 and am having problems with ssh. For some reason I can't connect via a remote host to my ssh. Local network connections do work just fine. I have been looking for a log of what is going on but have not had luck seeing anything.Things I have tried:
-Modify hosts.allow to allow ssh to all
-generated rsa1 key identity tryed specifying that with the -i option on the guest computer
[code]...
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Apr 10, 2009
I have a box (boell) running Fedora 10 sitting behind a firewall at school. I am able to freely ssh to and from this box to other computers (minion) within that lan. Outside of this network I cannot directly ssh to boell - I must ssh first to minion, then I can ssh to boell. I've spoken with the sysadmin and he's verified that the firewall permits ssh freely - i haven't had any issues like this with other boxes of mine there, so this isn't any surprise.
I have verified that the hosts.deny file is blank, iptables permits ports 22 (and 80) and I didn't see anything obvious in the sshd_config. I tried a tcp dump on the external host and boell while attempting to ssh from the former to boell. The packets appear to be acknowledged by boell, but this fails to lead to a connection. I've tried this process with external hosts in different locations with the same result. I have made few modifications to the default installation for F10, so perhaps there is some default somewhere I have to change. In any case, below I have attached excerpts of germane files.
======== ssh from boell =======
[root@boell log]# ssh -vvv 71.189.5.67
OpenSSH_5.1p1, OpenSSL 0.9.8g 19 Oct 2007
debug1: Reading configuration data /etc/ssh/ssh_config
[code]....
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Apr 17, 2010
i have a udp server running at port 60178. when i connect to it from localhost there is no problem. when i use the client from a remote host i am not able to connect. I changed my server firewall settings[Fedora 11] and added "udp 60178" to trusted ports but still nothing happened. I ran wireshark and observed that packets are coming to the server machine but server returns a "Port Unreachable" ICMP message and doesnt give the packet to the application.
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Jun 15, 2011
i try to connect to a specific ip address with ssh i have installed the ssh server and client. i also try it by connecting with localhost without any problem. But i keep taking this message if to try to connect to the ip address. i checked my hosts.allow and hosts.deny files and all are commented in there (i think tha this should not be the problem).
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Dec 13, 2010
I did a clean install of the latest version of Ubuntu. For some reason, there are still internet-issues. When I tried out the following command
Code:
telnet
open ftp.microsoft.com 21
I got
Code:
telnet: Unable to connect to remote host: Connection timed out
Also, during install of the new ubuntu, it was unable to reach the repos for downloading. Odd thing is that I can go online, and that when I type 'ftp.microsoft.com' in my browser, it displays the file-hierarchy.
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Jan 11, 2011
Does anyone know the best and simplest way to do this? I'd like the share to be mounted over the tunnel on boot with as little scripting as possible and be as secure as possible without exposing more than one port to the outside. I will be trying this method: [URL]... once the tunnel is established and 'always on' NFS would take care of the file system mount obviously. Lots of the information I have been reading is not up to date it seems. Does anyone have any experience with this?
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May 24, 2011
I need to be able to use an rsync command in script that will be run by cron. And it needs to be able to pass a password to rsync so that the remote server it's connecting to will authenticate.
I cannot set up ssh keys between the two servers, it's not an option. I cannot use any other language other than bash, it's my only option. I know this is highly insecure, I have no other option.
So far I have this:
rsync --rsh="/usr/bin/ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o PreferredAuthentications=password" -raxv /source/dir/* user@remotehost:/target/directory/.
This allows the script to ignore host verification and goes directly to the password prompt. I need the script to fill in this password prompt with the password that is stored in a variable.
I tried using expect, but I honestly don't know the syntax, it just keeps failing. A lot of the examples I'm finding online for expect starts off with a "spawn", which i don't have installed, and not sure if I have the ability to install it yet.
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Jun 12, 2011
I am running CentOS 5.1 on VMware on Win 7 On CentOS I added Bridged network adapter and the server is connected to internet without any problems, but when I telnet any server on port 25 I get connection timeout.
Code:
telnet f.mx.mail.yahoo.com 25
Trying 98.137.54.237...
telnet: connect to address 98.137.54.237: Connection timed out
telnet: Unable to connect to remote host: Connection timed out
I stopped all servers, iptables and sendmail on the linux server and the firewalls on the win 7 but still getting the same error! I added new network adapter ( host-only ) and tried to telnet the win machine from vmware Linux but I got connection refused
Code:
telnet 192.168.71.1 25
Trying 192.168.71.1...
telnet: connect to address 192.168.71.1: Connection refused
telnet: Unable to connect to remote host: Connection refused
[code]....
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Jan 27, 2010
Is there any one know how to deploy a remote OS installation for a host with public network address? In a LAN with private network, we can use PXE, kickstart... but what we could do with the hosts have only public ip address?
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Nov 10, 2010
When i am trying to telnet to a machine connected in our LAN ..
telnet: Unable to connect to remote host: Connection refused
What's the reason for this? how do i establish a connection? I am using ubuntu 10.04.
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Feb 5, 2009
telnet localhost the output is...
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused
I don't understand what is the problem. Its not configured properly how do i configure it?
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Mar 10, 2011
is it possible using a perl script to test for a socket listening on a UDP port on a remote host ?I work in an environment where netcat is not allowed and from time to time I need to see if a UDP port is open on a remote host.
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Oct 12, 2010
My SSH client for remote machine will sometimes hang. I have to wait until the session is finished hanging, I guess, to login with SSH again. I would get some message about multiple users or something.
I haven't been able to login this time for over 1 day. It's started saying something about Tcl_InitNotifier: unable to start notifier thread. My host can access the machine locally to fix this, but what is going on? Why is this occurring?
Here is the login attempt:
Code:
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