Let’s say you have a half-dozen machines at work you want to log into. Instead of setting up a remote forwarding connection from each of those machines, you can have the connection from your main machine perform multiple forwardings instead of just one. This even works if some of the machines don’t support ssh.
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As I mentioned in a previous post on ssh configuration, your config file can specify a variety settings for each server. In fact, the Hosts you use don’t even have to exist! Consider the following snippet in your ~/.ssh/config.
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Local port forwarding is the same as remote port forwarding but works in the opposite direction. An example is the clearest way to explain…
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Ssh tunneling can be a bit mind bending at first, but it’s simple when you get used to it.
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Do you log in to several servers with different usernames via ssh? Save typing by telling ssh which username to use on each server.
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From The Peanut Gallery