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The understated usefulness of SSH, part 2

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Software
HowTos

Last time, I covered some different ways of using SSH for remote access on a LAN or over the Internet, using RSA keys for secure authentication, and how to use GNU Screen to keep a process running after disconnecting your SSH session. This time, I’ll talk about using SSH with X11 forwarding, using VNC with SSH, and making it all run faster by adding compression and changing the cipher of your SSH session.

X11 forwarding is a feature built into X which enables you to make use of graphical applications running on a server from another computer over the network (if the server has a GUI). This technology enables you to use graphical tools to change settings or view files on the remote computer, or to forward graphical applications to your workstation which you might not otherwise have to ability (or desire) to install. The forwarded applications will actually be running on the server, so your local computer will have it’s processor and memory free for other things. To use X11 forwarding in Ubuntu, just add the -X flag to your SSH command like so:

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