X and -nolisten tcp

[Brian Stults <bstults@soc.ufl.edu>]

I have the following in /etc/X11/xinit/xserverrc:

exec /usr/bin/X11/X -dpi 100 -nolisten tcp

When I run nmap, I get this for X:

6000/tcp   open        X11

Is that unusual?  I had thought since I specified nolisten the tcp port 
would not be open.  Also, how can I check to be sure it is not 
listening?  I have only ever used X forwarding via ssh, so I don't know 
how to try it another way.  I don't run a telnet server.

Thanks.

--
Brian J. Stults
Department of Sociology
University of Florida
Box 117330
Gainesville, Florida 32611-7330
phone:  (352) 392-0265 x286
fax:    (352) 392-6568
e-mail: bstults@soc.ufl.edu