Although GUI implementations of SSH, such as PuTTY for Windows, exist, modern OSes almost universally include CLI implementations of SSH, including OpenSSH on Windows versions 10 and later, macOS and Linux.īefore attempting to open an SSH tunnel, take the following steps: This tutorial focuses on using the OpenSSH implementation of the SSH protocol at the command-line interface ( CLI). Before experimenting with SSH on an organization's network, be sure to check in with the IT department to determine whether SSH tunneling is permitted - and to make sure that the experiments do not trigger cybersecurity alarms. SSH is an important tool used by networking and information security professionals - as well as by hackers and other attackers.
#SSH PROXY TUNNEL HOW TO#
This tutorial shows how to use SSH tunnels for three specific purposes: When the secure connection uses remote port forwarding, however, the SSH tunnel provides a means to tunnel through private networks and the firewalls that protect them. Once the connection is made, the user can issue remote commands on that server. Network traffic from the local machine is routed from an arbitrary specified port on the localhost through the SSH connection to a specified port on the remote machine.įor the most basic use case, SSH is used to initiate a terminal session with a remote SSH server. An SSH tunnel is a secure connection between an SSH client and an SSH server.
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