http://www.rzg.mpg.de/images/SSHtunn...-tunnel-00.gif
This is a short introduction to SSH tunnelling (also known as "port forwarding"). It describes with some simple examples how a user can establish an apparently direct connection to any machine in the Garchinger Campus, despite the newly enforced restricted access to a selected number of machines.
For more details about SSH tunnelling, see the links at the bottom.
Let's define our sample setup: We have a PC at home called mypc. We want to connect to a computer in Garching called work, but we are only allowed to connect to a gateway machine called gate:
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