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Date: Fri, 31 Dec 2010 21:56:22 +0200
From: Manolis Kiagias <sonicy@otenet.gr>
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To: "Alain G. Fabry" <alainfabry@belgacom.net>
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Cc: freebsd-questions@freebsd.org
Subject: Re: XDM not showing login screen
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On 31/12/2010 7:07 μ.μ., Alain G. Fabry wrote:
> Hi, I'm trying to get my XDMCP to work, but for some reason the XDM daemon doesn't reply to XDMCP requests.
>
> I see the XDMCP packet arriving on my xdm server
>
> harley# tcpdump port 177
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> listening on bge0, link-type EN10MB (Ethernet), capture size 96 bytes
> 10:33:42.930750 IP 192.168.1.200.1291 > 255.255.255.255.xdmcp: UDP, length 7
>
> All seems to be running ok
> harley# ps ax | grep xdm
> 76517  ??  Ss     0:00.41 /usr/local/bin/X :0 -auth /usr/local/lib/X11/xdm/authdir/authfiles/A:0-Z5AiCR (Xorg)
> 76519  ??  Is     0:00.06 xdm: :0 (xdm)
>  6040   2  S+     0:00.00 grep xdm
>  76515   5  I+     0:00.01 xdm -nodaemon -debug 1
>
>
> The XDM daemon does not reply with a login screen.
>
> I've commented out the following in my xdm-config file
> ! DisplayManager.requestPort:   0
>
> following in my Xaccess file
> *                                       #any host can get a login window
>
> xdm and X are running, and I see the following in my xdm.log file, even though I don't get a login screen, the log file indicates incorrect login
>

Add a LISTEN line at the end of your Xaccess file, with the specific IP
of your server rather then relying on LISTEN *
I've had the same when I was setting up my XDMCP lab.