Disable X from listening on port 6000

[hellinterface]

I'm trying to create a locked down Knoppix build, so I don't want X listening for connections.

I've tried editing /usr/X11R6/bin/startx, by adding

defaultserverargs="-nolisten tcp"

and followed this tutorial

http://www.oneeyedcrow.net/tech/securex.html except the IPTABLES bit, as I'd rather ensure that this was disabled at the source.

but it doesn't seem to have made any difference. I'm guessing these defaults are being over-ridden (by a start-up script??) somewhere else, but where?

Any ideas?

[hellinterface]

No Matter, I figured it out:

I found the problem, Knoppix uses a custom script to start X:

I had to edit

/etc/init.d/xsession

and add the line
XOPTIONS="-nolisten tcp"