Hi all,
I'm looking for pointer for setting up VNC so that access to the system is via gdm/kdm. Yes, I know about vino, and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct into a desktop.
Thanks in advance
On 01/22/2013 03:52 PM, Bruce Ferrell wrote:
Hi all,
I'm looking for pointer for setting up VNC so that access to the system is via gdm/kdm. Yes, I know about vino, and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct into a desktop.
Depending on what you are really trying to accomplish, freenx/nx might be what you need (and on centos-6, the OpenNX client):
On 01/22/2013 02:15 PM, Johnny Hughes wrote:
On 01/22/2013 03:52 PM, Bruce Ferrell wrote:
Hi all,
I'm looking for pointer for setting up VNC so that access to the system is via gdm/kdm. Yes, I know about vino, and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct into a desktop.
Depending on what you are really trying to accomplish, freenx/nx might be what you need (and on centos-6, the OpenNX client):
yep,
I'm aware of freenx... and it drops you directly into a desktop. Not acceptable for this situation. I'm *really* trying to be dropped into a *dm (gdm/kdm) screen to log into the system
On 01/22/2013 05:26 PM, Bruce Ferrell wrote:
On 01/22/2013 02:15 PM, Johnny Hughes wrote:
On 01/22/2013 03:52 PM, Bruce Ferrell wrote:
Hi all,
I'm looking for pointer for setting up VNC so that access to the system is via gdm/kdm. Yes, I know about vino, and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct into a desktop.
Depending on what you are really trying to accomplish, freenx/nx might be what you need (and on centos-6, the OpenNX client):
yep,
I'm aware of freenx... and it drops you directly into a desktop. Not acceptable for this situation. I'm *really* trying to be dropped into a *dm (gdm/kdm) screen to log into the system
Well, you have to "log into the system" with the opennx client ... then you get a desktop.
Just like you would be directed to a desktop when you complete the gdm login.
There is absolutely a way to do this - I use to do so to my workstation from home...
And of course I cannot find the docs anywhere!
Not sure this will help: http://www.realvnc.com/products/vnc/documentation/5.0/misc/reference/vncserv...
On Tue, 22 Jan 2013, Bruce Ferrell wrote:
On 01/22/2013 02:15 PM, Johnny Hughes wrote:
On 01/22/2013 03:52 PM, Bruce Ferrell wrote:
Hi all,
I'm looking for pointer for setting up VNC so that access to the system is via gdm/kdm. Yes, I know about vino, and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct into a desktop.
Depending on what you are really trying to accomplish, freenx/nx might be what you need (and on centos-6, the OpenNX client):
yep,
I'm aware of freenx... and it drops you directly into a desktop. Not acceptable for this situation. I'm *really* trying to be dropped into a *dm (gdm/kdm) screen to log into the system
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Scot P. Floess RHCT (Certificate Number 605010084735240) Chief Architect FlossWare http://sourceforge.net/projects/flossware http://flossware.sourceforge.net https://github.com/organizations/FlossWare
OK, also found this - which is "ringing a bell"
http://www.realvnc.com/products/vnc/documentation/4.6/unix/x0.html#vncso
Its been quite a few years since I've run VNC this way... But this page is how I remember doing it now :)
On Tue, 22 Jan 2013, Bruce Ferrell wrote:
On 01/22/2013 02:15 PM, Johnny Hughes wrote:
On 01/22/2013 03:52 PM, Bruce Ferrell wrote:
Hi all,
I'm looking for pointer for setting up VNC so that access to the system is via gdm/kdm. Yes, I know about vino, and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct into a desktop.
Depending on what you are really trying to accomplish, freenx/nx might be what you need (and on centos-6, the OpenNX client):
yep,
I'm aware of freenx... and it drops you directly into a desktop. Not acceptable for this situation. I'm *really* trying to be dropped into a *dm (gdm/kdm) screen to log into the system
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Scot P. Floess RHCT (Certificate Number 605010084735240) Chief Architect FlossWare http://sourceforge.net/projects/flossware http://flossware.sourceforge.net https://github.com/organizations/FlossWare
On Tue, Jan 22, 2013 at 5:26 PM, Bruce Ferrell bferrell@baywinds.org wrote:
On 01/22/2013 02:15 PM, Johnny Hughes wrote:
On 01/22/2013 03:52 PM, Bruce Ferrell wrote:
Hi all,
I'm looking for pointer for setting up VNC so that access to the system is via gdm/kdm. Yes, I know about vino, and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct into a desktop.
Depending on what you are really trying to accomplish, freenx/nx might be what you need (and on centos-6, the OpenNX client):
yep,
I'm aware of freenx... and it drops you directly into a desktop. Not acceptable for this situation. I'm *really* trying to be dropped into a *dm (gdm/kdm) screen to log into the system
Errr, what? Freenx offers to leave your desktop running after you have logged in and suspended - and then if you log back in as the same user you can resume. But you can terminate the session when you are done if you don't want to leave it running.
I've used vnc spawned by xinetd in the past and it works the way you describe. It works, but not as nicely as freenx and if you lose your connection it kills everything running, like it or not.
On Tue, Jan 22, 2013 at 9:53 PM, Les Mikesell lesmikesell@gmail.com wrote:
I've used vnc spawned by xinetd in the past and it works the way you describe. It works, but not as nicely as freenx and if you lose your connection it kills everything running, like it or not.
I know it is bad form to reply to myself, but now I remember that the systems where I had this were originally installed with the k12ltsp distribution which was Centos (or fedora for some versions) with some additions to make ltsp (thin client network booting) work out of the box, and it included the vnc-ltsp-config package in the base install. But you can install that via yum. See the vnc-ltsp-config section of http://wiki.centos.org/HowTos/VNC-Server. This gives you vnc sessions on demand with separate user logins for each. And if you want, you can arrange for different screen sizes on different ports.
Bruce Ferrell wrote:
I'm looking for pointer for setting up VNC so that access to the system is via gdm/kdm. Yes, I know about vino, and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct into a desktop.
I set this kind of thing up many years ago on CentOS 4. I was curious to see if it still worked on CentOS 6 and found that this works for me:
Edit /etc/gdm/custom.conf to add 'Enable=true' to the '[xdmcp]' section. Restart gdm. (I just did 'telinit 3; telinit 5'.)
Run this command to start a server:
/usr/bin/Xvnc :1 -query localhost -geometry 1100x850 -securitytypes none &
Given a properly configured (or disabled) firewall you should then be able to run 'vncviewer hostname:1' to get a login screen.
Once you've logged in the session will persist even if you close vncviewer, so you can reconnect later. This is, of course, hopelessly insecure.
Starting Xvnc from xinetd is also possible, but then sessions aren't persistent.
For some reason that I've never been able to fathom if you log out from a persistent session there's an annoying delay until the login screen reappears.
Ron
On 01/23/2013 05:48 AM, Ron Yorston wrote:
Bruce Ferrell wrote:
I'm looking for pointer for setting up VNC so that access to the system is via gdm/kdm. Yes, I know about vino, and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct into a desktop.
I set this kind of thing up many years ago on CentOS 4. I was curious to see if it still worked on CentOS 6 and found that this works for me:
Edit /etc/gdm/custom.conf to add 'Enable=true' to the '[xdmcp]' section. Restart gdm. (I just did 'telinit 3; telinit 5'.) Run this command to start a server: /usr/bin/Xvnc :1 -query localhost -geometry 1100x850 -securitytypes none &Given a properly configured (or disabled) firewall you should then be able to run 'vncviewer hostname:1' to get a login screen.
Once you've logged in the session will persist even if you close vncviewer, so you can reconnect later. This is, of course, hopelessly insecure.
Starting Xvnc from xinetd is also possible, but then sessions aren't persistent.
For some reason that I've never been able to fathom if you log out from a persistent session there's an annoying delay until the login screen reappears.
Ron _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Hello,
I set my xorg.conf file like below and I can then run: vncviewer :0
and it just like I am sitting at my desk logging into kdm.
Section "ServerLayout" Identifier "Default Layout" Screen 0 "Screen0" 0 0 InputDevice "Keyboard0" "CoreKeyboard" EndSection
Section "Module" Load "vnc" EndSection
Section "InputDevice" # keyboard added by system-config-display Identifier "Keyboard0" Driver "kbd" Option "XkbModel" "pc105+inet" Option "XkbLayout" "us" EndSection
Section "Device" Identifier "Videocard0" Driver "intel" EndSection
Section "Screen" Identifier "Screen0" Device "Videocard0" DefaultDepth 24 Option "SecurityTypes" "VncAuth" Option "UserPasswdVerifier" "VncAuth" Option "PasswordFile" "/root/.vnc/passwd" SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection
This might be a little off-subject but look at xrdp. That sits on top of vnc and let's you use Windows' remote desktop client to log in as any local user. On Jan 22, 2013 9:53 PM, "Bruce Ferrell" bferrell@baywinds.org wrote:
Hi all,
I'm looking for pointer for setting up VNC so that access to the system is via gdm/kdm. Yes, I know about vino, and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct into a desktop.
Thanks in advance
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Bruce Ferrell <bferrell@...> writes:
Hi all,
I'm looking for pointer for setting up VNC so that access to the system is via
gdm/kdm. Yes, I know about vino,
and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct
into a desktop.
Thanks in advance
This doe what you want - not sure if it's optimal, but by putting it in /etc/rc.local I can see gdm on reboot:
x11vnc -xkb -auth guess -q -rfbauth /home/bhepple/.vnc/passwd -display :0 -clear_all -loop
Bob Hepple <bob.hepple@...> writes:
Bruce Ferrell <bferrell@...> writes:
This doe what you want - not sure if it's optimal, but by putting it in /etc/rc.local I can see gdm on reboot:
x11vnc -xkb -auth guess -q -rfbauth /home/bhepple/.vnc/passwd -display :0 -clear_all -loop
Hmmm - apologies for repetition but it seems my followup was lost ...
I wanted to mention that it's probably a good idea to use a port other than the default to avoid conflict with other servers which might be running eg vino. I use "-rfbport 3389" as that port makes it through our firewall (it's the RDP port). Also I should mention that the remote screen is unlocked and alive so there are security concerns with this approach. Anyone know how to disable/lock it?
Cheers
Bob
On Thu, Jan 24, 2013 at 6:07 AM, Bob Hepple bob.hepple@gmail.com wrote:
I'm looking for pointer for setting up VNC so that access to the system is via
gdm/kdm. Yes, I know about vino,
and /etc/sysconfig/vncservers but what I'm looking for is a sertup that allows me to see the *dm login screen instead of being dropped direct
into a desktop.
Thanks in advance
This doe what you want - not sure if it's optimal, but by putting it in /etc/rc.local I can see gdm on reboot:
x11vnc -xkb -auth guess -q -rfbauth /home/bhepple/.vnc/passwd -display :0 -clear_all -loop
Doesn't x11vnc always stay tied to the console screen? Sometimes that's what you want, but I generally want independent remote sessions.
Les Mikesell <lesmikesell@...> writes:
Doesn't x11vnc always stay tied to the console screen? Sometimes that's what you want, but I generally want independent remote sessions.
Yes - but the OP wanted something that would tie to display :0 even for gdm/kdm/xdm logins.
Also - it looks like the -clientdpms option turns off the physical monitor(s) when a vncviewer is attached; while not exactly secure, it's a step in the right direction.
-
Bob Hepple -
Bruce Ferrell -
Johnny Hughes -
Johnny Hughes -
Kevin Thorpe -
Les Mikesell -
Ron Yorston -
Scot P. Floess -
Steve Clark