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x_over_ssh_with_sudo_su [2011/06/01 12:58] (current)
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 +====== X over SSH with sudo/su ======
 +X over SSH is a nice feature which allow the X traffic to be encrypted in the SSH tunnel.\\
 +Executing su / sudo will although break the X traffic and result in a error\\
 +X11 connection rejected because of wrong authentication.\\
 +X connection to localhost:​10.0 broken (explicit kill or server shutdown).
 +The problem is that the MIT-MAGIC-COOKIE not will survive sudo/su\\
 +Here is a little trick to add the originating users MIT-MAGIC-COOKIE to the end user
 +  # ssh -X <​username>​@<​hostname>​
 +  # xauth list
 +Output similar to:
 +  <​hostname>/​unix:<​display> ​ MIT-MAGIC-COOKIE-1 ​ <unique MIT-MAGIC-COOKIE key>
 +Copy output from xauth list (whole line), then sudo / su
 +As new user:
 +  # xauth add <the output of the above xauth list>
 +  # export DISPLAY=<​hostname>:<​display>​
 +Hostname & DISPLAY variable, which is also seen in the xauth list.\\
 +You might skip the EXPORT DISPLAY command if the DISPLAY variable is already configured correct.
x_over_ssh_with_sudo_su.txt ยท Last modified: 2011/06/01 12:58 (external edit)