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My remaining use case for X11 remote display doesn't quite fit in the VNC/etc. remote display paradigm. At work, I submit a job to queuing software that picks a server (based on load and resource requirements) from a pool on the internal network. The GUI for that job then pops up on my X11 display. I don't really care which server is running the job, and the job is just using $DISPLAY -- we don't even forward over ssh.

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I’m not an X hater but just know you’ve given that server access to your display socket which is effectively remote command execution.

In most cases this could be solved with a good web user interface, but you can rest assured X won’t be dead in the next 5-15 years, and you can use an intermediary box w/VNC if security is that much of a concern.

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