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linux/ssh: fix x-forwarding sections
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@@ -62,11 +62,17 @@ Host server
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User user
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```
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### Server Setup
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### X-Forwarding
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[Source](https://tutorials.rc.nectar.org.au/x11forwarding/02-enable-x11-on-virtual-machine)
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For the server setup edit the file `/etc/ssh/sshd_config` and make sure X-Forwarding is enabled by
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editing a line to look like the following.
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The following sections address the usage of X-forwarding which makes it possible to use graphical
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programs remotely over SSH.
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#### Enabling X-Forwarding on a Server
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This section is based on a
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[blog by rc nectar](https://tutorials.rc.nectar.org.au/x11forwarding/02-enable-x11-on-virtual-machine).
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For the server setup of X-forwarding edit the file `/etc/ssh/sshd_config` and make sure
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X-forwarding is enabled by editing a line to look like the following.
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```txt
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X11Forwarding yes
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@@ -78,27 +84,28 @@ Make sure to restart the SSH daemon afterwards by running the following command.
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service sshd restart
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```
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Afterwards X-Forwarding should be enabled on the server.
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Afterwards X-forwarding should be enabled on the server.
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For full functionality install the `x11-apps` package aswell.
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#### Client Setup
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#### Enabling X-Forwarding on a Client
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Auf dem Server ist das so genannte X-Forwarding aktiviert.
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Das bedeutet, dass es möglich ist, graphische Programme aufzurufen und diese über eine SSH-Verbindung darstellen zu lassen.
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Bei einem klassischen Login mittels des Terminals und dem `ssh`-Befehl kann dieser um die Flag `-C` erweitert werden
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Der komplette Befehl sieht dann wie folgt aus, wobei sich der Name für `<host>` aus dem [Setup-Abschnitt](#setup) ergibt.
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To use X-forwarding when connecting use the `-C` flag as shown in the following example.
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```sh
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ssh -C <host>
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```
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Die `-C`-Flag kann in der [`config`-Datei](#setup) vermerkt werden, sodass sie nicht extra angeführt werden muss.
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Dafür müssen die beiden folgenden Zeilen in die `config` unter dem entsprechenden Eintrag eingefügt werden.
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The `-C` flag can also be noted in the config file so that it does not have to be specified each
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time.
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This can be achieved by editing the config file which is located at `~/.ssh/config` and include the
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following lines.
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```
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ForwardX11 yes
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ForwardX11Trusted yes
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```
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Die Funktion des X-Forwardings kann geprüft werden, indem man sich beim Server einloggt und dann `xclock` aufruft.
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Bei korrekter Konfiguration sollte sich nun eine graphische Oberfläche öffnen, die die Uhrzeit anzeigt.
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The functionality of X-forwarding can easily be tested by running a graphical program when remotely
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connected.
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An example for this could be the simple clock program `xclock`.
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