forked from pifty/tutes-dump
74 lines
2.8 KiB
HTML
74 lines
2.8 KiB
HTML
<h4>Setting up X11 forwarding on SDF</h4>
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<h4>Contents</h4>
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<ul>
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<li> <a href="#ssh">X11 forwarding through ssh </a>
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<li> <a href="#direct">Sending X11 directly</a>
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<li> <a href="#metaarray">X11 On The MetaArray</a>
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</ul>
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<i>Please note that MetaARPA membership is required to run X11 applications</i>
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<p>
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<h4 id="ssh">X11 forwarding through ssh</h4>
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This should be the preferred method of running X. By tunneling
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through an existing ssh connection, extra firewall ports or
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port forwarding is not needed. The traffic is also protected
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by ssh.
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Note that this tutorial references <i>sverige.freeshell.org</i>
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however <i>iceland.freeshell.org</i> is also available to MetaARPA
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members and supports X forwarding.
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<ul>
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<li>Install and run an X server such
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as <a href="http://sourceforge.net/projects/xming/">Xming</a>.</li>
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<li>ssh to sverige.freeshell.org with "ssh -X
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<i>user</i>@sverige.freeshell.org".</li>
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<li><b>Note:</b> If you see an error just after connecting
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that <i>xauth</i> is missing, try adding an option to the ssh command:
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"ssh -o XAuthLocation=`which xauth`
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-X <i>user</i>@sverige.freeshell.org".</li>
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<li><a
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href="http://www.chiark.greenend.org.uk/~sgtatham/putty/">Putty</a>
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users should use sverige.freeshell.org as the Host Name and
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change the Port to 443: <p><img
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src="/tutorials/images/puttyx1.png"/></p></li>
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<li> Then click on the little "+" besides "SSH" on the left list, click on "X11" and tick the
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"Enable X11 forwarding" box:
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<p><img src="/tutorials/images/puttyx2.png"/></p></li>
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<li> Click Open, login then run <i>xeyes</i> and play</li>
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<li> Running "xhost +localhost" on the local machine may be needed.
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</ul>
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<h4 id="direct">Direct X11</h4>
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The advantage of sending X11 traffic directly is performance
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(screen updates) should be slightly faster because the data is
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not encrypted first.
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The disadvantage of sending X11 traffic directly is the data
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is not encrypted first.
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The X client will send the traffic directly to the local X
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server, so care must be taken to open up firewalls and forward
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the ports 6000/TCP - 6063/TCP as necessary.
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<h5><u>On your side</u>:</h5>
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<li>Open an xterm on your computer
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<li>Run '<i>xhost +</i>' to enable server access
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<li>Run '<i>ssh -X -p443 userid@sverige.sdf.org</i>' where 'userid' is your SDF user id<p>
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<h5><u>On the SDF side</u>:</h5>
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<li>Run <i>export DISPLAY=`echo $SSH_CLIENT|awk '{print $1}'`:0.0</i>
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<li>Run <i>xeyes</i> and play
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<h4 id="ssh">X11 On The MetaArray</h4>
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The above methods no longer seem to be working, but you can still use x11 via SSH on the MetaArray. The command to do this is "ssh -Y <i>userid</i>@ma.sdf.org", where <i>userid</i> is your SDF user id.
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<hr>
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<div id="rcs_tag">$Id: x11_forwarding.html,v 1.9 2016/04/19 20:53:21 sethkush Exp $</div>
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