Can't Get XDMCP Login on Mandrake 9.0 Box from XP

Curt Lindner
Mon Jan 27 18:00:00 GMT 2003

John, I did the netstat command, and here's the response:

# netstat -plun | grep 177
udp        0      0   *

kdm is listening, but I wonder if the udp line might be indicative of a



From: John Buttery <john at io dot com>
To: cygwin-xfree at cygwin dot com
Date: Mon, 27 Jan 2003 02:11:50 -0600
Subject: Re: Can't Get XDMCP Login on Mandrake 9.0 Box from XP

* Harold L Hunt II <> [2003-01-25 15:08:38 -0500]:
> I don't know that Port=177 and Willing=[anything] are necessary.  But
> then, I do not know much about that.

  No, they're not necessary; you should probably comment Willing= out
until you know what it does, and 177 is the default port so commenting
that line out is fine also.

> What I do know is that you have to restart kdm in order for those
> changes to take effect.  The easiest way to do that, short of
> restarting your machine, is to drop to run level 3, then go back to
> run level 5.
> You do that by running:
> init 3
> [wait about a minute]
> init 5

  Or run "service dm restart".  :)

> One side question: you DO see a graphical login screen when you sit
> down at your linux machine, right?  If not, you aren't running kdm so
> XDMCP connections are not being accepted simply because you are not
> running a program that accepts them.

  Or you might be running kdm, on port 177, but not allowing any actual
accesses.  I don't know about kdm, but its daddy xdm has a configuration
file /etc/X11/xdm/Xaccess for that sort of thing.  Try running:

# netstat -plun | grep 177

  ...and see if kdm is listening; if it is, you have an error in your

 John Buttery

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