I have read through the posts of other users experienceing this problem with startx but my problem is about xdm. How do I prevent X from listening to ports 6000:6063 when using xdm. I'm probably just too blind to see it when I searched the forum.

Thanks in advance.

startx -- -nolisten tcp

my problem is for xdm not startx

oops.. yeah, just thought about that. have no idea as i never use xdm.

Notfromkansas made it work by adding a "nolisten tcp" line to /etc/X11/xdm/Xservers.

This is what I found:

if you start X from the command line:

call it as
X -nolisten TCP
or startx -- -nolisten TCP

if you start X with the kde login:

change the line at the bottom of
/etc/X11/xdm/Xservers from

:0 local /bin/nice -n -10 /usr/X11R6/bin/X -deferglyphs 16

to:
:0 local /bin/nice -n -10 /usr/X11R6/bin/X -deferglyphs 16 -nolisten TCP

if you start X with the gnome login:
change the line at the bottom of

/etc/X11/gdm/gdm.conf

from
command=/usr/bin/X11/X -deferglyphs 16

to
command=/usr/bin/X11/X -deferglyphs 16 -nolisten TCP

Ps. Remember its TCP not tcp. I had a lot of fun with that one

How do you get X to listen on the ssh encrypted port?

IMO its the other way around, adapt the stunnel to where the source port is, read a X11 forwarding/tunneling HOWTO/FAQ at linuxdoc.org.
Btw don't tack on questions on like that, add a new thread instead.