Okay I have a lan set up at my house Its all behind a ipchain firewall 
(RH 7.2 yes I know I should be using iptables). I'm getting tired of 
running up and down stairs to get to my different computers and want to 
simply export my display to my main computer. Trying to advoid typing 
xhost +<hostname> for every computer in my house yet at the same time 
I'm concerned that if I type xhost + that it will open my display to the 
internet. So my question is does anyone know of the ipchain rule that 
will prevent my display from going out? Or is this something I even have 
to worry about?

Carl P.