RHEL5 xdmcp not working for windows 7

 
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Operating Systems Linux Red Hat RHEL5 xdmcp not working for windows 7
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Old 08-31-2012
RHEL5 xdmcp not working for connection to windows 7 box

I am running a RHEL5 box and I have xdmcp up and running. I want the hostname of this box showing up only in the xdmcp choosers of certain specific systems, and in RHEL5 using gdm, it appears the only way to prevent the name from appearing in all xdmcp choosers is to use the hosts.allow file. This box is going to have some of my users logging in from their home computers and through DHCP connections, so I'd like to use hostnames rather than IP addresses in hosts.allow. This works fine for my other linux boxes and my windows xp boxes, but for some reason, it fails for my windows7 boxes. It fails out with 'Fatal Error: Manager Unwilling' when I try to use exceed (an X server for Windows) to establish an xdmcp connection. If I use the IP address of a windows7 box, it works fine, but just not the hostname. I thought it might be a name resolution problem, and since nslookup works, I tried setting dns first in my nssswitch.conf, but that didn't help. I've been googling for hours, but to no avail. Anybody have any ideas?

Last edited by smd; 08-31-2012 at 09:07 PM..
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gdmsetup(1)                                                        User Commands                                                       gdmsetup(1)

NAME
gdmsetup - GDM Configuration Tool SYNOPSIS
gdmsetup [gnome-std-options] DESCRIPTION
gdmsetup provides a graphical interface that enables you to modify the GDM configuration file, gdm.conf. gdmsetup can only be run as the root user. OPTIONS
The following options are supported: gnome-std-optionStandard options available for use with most GNOME applications. See gnome-std-options(5) for more information. EXTENDED DESCRIPTION
gdmsetup has six tabs: General, Standard greeter, Graphical greeter, Security, Accessibility, and XDMCP. The following sections describe the configuration options that you can edit. The affected gdm.conf section-key pair is listed in parenthe- ses. General o Whether the local greeter program is the Graphical or Standard greeter (daemon - Greeter) o Whether the remote greeter program is the Graphical or Standard greeter (daemon - RemoteGreeter) o Whether to use the 24-hour clock format (greeter - Use24Clock) o Welcome string (greeter - Welcome) o Remote Welcome string (greeter - RemoteWelcome) o Automatic Login selection (daemon - AutomaticLoginEnable) o Automatic Login username (daemon - AutomaticLogin) o Timed Login Selection (daemon - TimedLoginEnable) o Timed Login username (daemon - TimedLogin) o Timed Login delay (daemon - TimedLoginDelay) Standard Greeter o Background image selection as none, image, or color (greeter - BackgroundType) o Background image (greeter - BackgroundImage) o Scale background image to fit (greeter - BackgroundScaleToFit) o Background color (greeter - BackgroundColor) o Only background color on remote displays (greeter - BackgroundRemoteOnlyColor) o Logo image (greeter - Logo) o Show chooseable user images or face browser (greeter - Browser) Graphical Greeter o Theme selection (greeter - GraphicalTheme) o Install new theme o Delete theme Security o Allow root to login with GDM (security - AllowRoot) o Allow root to login remotely with GDM (security - AllowRemoteRoot) o Allow remote timed logins (security - AllowRemoteAutoLogin) o Show actions menu (greeter - SystemMenu) o Allow configuration from the login screen (greeter - ConfigAvailable) o Allow running XDMCP chooser from the login screen (greeter - ChooserButton) o Always disallow TCP connections to Xserver (security - DisallowTCP) Accessibility o Enable accessibility modules (daemon - AddGtkModules) o Make a sound when login window is ready (greeter - SoundOnLogin) o Sound file selection (greeter - SoundOnLogin) XDMCP o Enable XDMCP (xdmcp - Enable o Honor indirect requests (xdmcp - HonorIndirect) o Listen on UDP port (xdmcp - Port) o Maximum pending requests (xdmcp - MaxPending) o Maximum pending indirect requests (xdmcp - MaxPendingIndirect) o Maximum remote sessions (xdmcp - MaxSessions) o Maximum wait time (xdmcp - MaxWait) o Maximum indirect wait time (xdmcp - MaxWaitIndirect) o Displays per host (xdmcp - DisplaysPerHost) o Ping interval in seconds (xdmcp - PingIntervalSeconds) FILES
The following files are used by this application: /usr/bin/gdmsetup Executable for GDM Configuration Tool /usr/sbin/gdmconfig Wrapper script to run gdmsetup, for binary name compatibility /etc/X11/gdm/gdm.conf Contains GDM configuration and documentation, can be modified by gdmsetup or gdmconfig ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWgnome-display-mgr | +-----------------------------+-----------------------------+ |Interface stability |External | +-----------------------------+-----------------------------+ SEE ALSO
Latest version of the GNOME Desktop User Guide for your platform. gdm(1), gdmXnestchooser(1), gdmflexiserver(1), gdmphotosetup(1), gdmthemetester(1), gdm-restart(1m), gnome-std-options(5) NOTES
Written by Brian Cameron, Sun Microsystems Inc., 2004. SunOS 5.10 1 Sep 2004 gdmsetup(1)