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[ubuntu] what ports should I open for X-server

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linux-howto

http://ubuntuforums.org – Hi!!! I have a reports server on unix that needs an X-server for running. I've installed a ubuntu on an old pc to run the x-server. I set the display variable on the server pointing to the ubuntu box, but cant make the display work. (i use xclock for testing). I can ping from the server to the ubuntu machine, but I have a firewall between the two machines. I need to know what ports should I open for X-server. I opened ports 6000 and 6001 but still doesnt work. I also executed the command "xhost +" on ubuntu. Should I do something in the ubuntu machine for opening the port (HowTos)