SSH port forwarding
SSH is well known to Linux administrators as the de facto method for connecting to other systems. SSH long ago supplanted other connection methods because it strongly encrypts the connection between the hosts, ensuring that passwords and any transmitted data are safe from prying eyes. On Fedora® and Red Hat Enterprise Linux systems, and many other Linux distributions, the OpenSSH suite provides the programs for this purpose. An administrator typically runs SSH to login to another system, often to run a shell on the remote host and issue commands. SSH, however, has many extra tricks up its sleeve beyond simply securing a connection.
At Red Hat Magazine.
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