[X2Go-Commits] [[X2Go Wiki]] page changed: doc:howto:tce

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Date        : 2017/11/20 12:35
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Old Revision: https://wiki.x2go.org/doku.php/doc:howto:tce?rev=1511180919
New Revision: https://wiki.x2go.org/doku.php/doc:howto:tce
Edit Summary: added section regarding persistent SSH Host Keys
User        : stefanbaur

@@ -717,8 +717,12 @@
  So just do ''dd if=./original-x2go-tce-live-image-i386.hybrid.iso of=/dev/targetdevice'' and wait until it finishes.
  
  Also, when using iso-hybrid and USB media, there are a few "cheats" to reclaim unused space on the USB media, and to turn it into a solution that allows you to run X2GoClient in portable mode on Windows, and boot it as X2Go-TCE, with a shared configuration file. 
  
+ 
+ ===== Persistent SSH Host Keys =====
+ As there is no
simple way to have individual, persistent SSH Host Keys per ThinClient, and sharing secret host keys across machines is a bad idea, too, the default behavior is to generate a new key pair upon boot. If you need to SSH into ThinClients often, this may soon become annoying.
+ Therefore, X2Go-TCE-Live comes with a script that, during the boot process, will scan for USB media and fixed disk media (with fixed disk media taking precedence, unlike the ''copysecring'' boot parameter that copies SSH //Client// Private Keys when set) for a directory ''config/sshdkeys''. The volume must be labeled ''X2GO-TCE-LIVE'' and may use any supported file system, though write support is required if you want to store the keys from within X2Go-TCE-Live. If you're booting from fixed disk media/internal flash, you may put the folder directly in the root directory of your boot drive - just don't forget to change the volume label to the "magic value" ''X2GO-TCE-LIVE''. If the directory exists, but is empty,
all current SSH Host Keys will be copied into it (missing ones will be generated on the fly). Any SSH Host Keys found in the ''config/sshdkeys'' directory will be copied into ''/etc/ssh/'' (in the ramdisk), with proper permissions and ownerships for sshd, and sshd will be told to reload its config if required.
  
  ===== Boot Parameters for X2Go-TCE =====
  <note important>**These are always required for security reasons, unless you are working on a debug image:**
    * ''noroot'' - do not allow the local user account on the ThinClient (named "user") to become root, e.g. using sudo **Always set this unless you are debugging an image and need to log in locally!**


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