How to disable XFree86 and wdm listening ports

[Wolfgang Kess]

Hello,

what is the right way to disable XFree86 and wdm listening
ports tcp 6000 and tcp 1024.

I read in man XFree86 about the -nolisten tcp option
and tried to set in  /usr/X11R6/lib/X11/xdm  

:0 local /usr/X11R6/bin/X -nolisten tcp

but it was not successful.


What is the right way to close the ports without use of IPFW?

Your help would be appreciated.

Thank´s
Wolfgang