Is there any way of having a X server on a machine without having an
open port on 6000/tcp? I'd like to bind the server only to localhost,
not to all available interfaces, but I don't see any options for the X
server that could help doing this. Did I missed something? 

And is it possible to use UNIX domain sockets for communicating between
X clients and the X server? Again, I saw nothing in the documentation
about this.

-- 
Emmanuel Dreyfus
p99dreyf@criens.u-psud.fr