The ability to display windows from different
machine partitions side-by-side on one display provides an
important productivity boost for system administrators.
13.2 Displaying on a Remote Server
Causing an X client to display on a remote server is fairly straightforward: simply use
the displayspec (Sections 1.12 and 7.1) to point to the desired server when starting
the client.
Let??™s assume that the X display number on blue is :0 and the client you want to run
on red is xclock.
13.3
176 Chapter 13: Remote Access
For ease of experimentation, turn off access controls on blue??”of course, don??™t do
this on a production machine without understanding the consequences:
blue$ xhost +
access control disabled, clients can connect from any host
Now the client can simply be started on red, using the displayspec blue:0:
red$ xclock -display blue:0
The xclock window will appear on blue??™s display.
For this to work, you may need to check your firewall settings, both
on your router/switch and on the host running the X server. On a
Linux system, iptables -L will show you the current firewall rules; you
can configure the settings with your distribution??™s tools (such as lokkit
or Yast) or use the iptables command.
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