This is a piece of software that knows how to communicate using the SSH protocol and can be given information about the remote host to connect to, the username to use, and the credentials that should be passed to authenticate. The user’s computer must have an SSH client. This software listens for connections on a specific network port, authenticates connection requests, and spawns the appropriate environment if the user provides the correct credentials. This means that for an SSH connection to be established, the remote machine must be running a piece of software called an SSH daemon. The SSH connection is implemented using a client-server model. For the duration of your SSH session, any commands that you type into your local terminal are sent through an encrypted SSH tunnel and executed on your server. When you connect through SSH, you will be dropped into a shell session, which is a text-based interface where you can interact with your server. When you connect through SSH, you log in using an account that exists on the remote server. SSH stands for Secure Shell and provides a safe and secure way of executing commands, making changes, and configuring services remotely.

The most common way of connecting to a remote Linux server is through SSH.

Copy and paste the command-line examples given, substituting the highlighted values with your own values.

Use the Contents menu on the left side of this page (at wide page widths) or your browser’s find function to locate the sections you need.

Most sections are not predicated on any other, so you can use the following examples independently.

Use whichever subsequent sections are applicable to what you are trying to achieve.

Read the SSH Overview section first if you are unfamiliar with SSH in general or are just getting started.

This can be used as a quick reference when you need to know how to connect to or configure your server in different ways.

In this cheat sheet-style guide, we will cover some common ways of connecting with SSH to achieve your objectives. After connecting, all commands you type in your local terminal are sent to the remote server and executed there. It provides a text-based interface by spawning a remote shell. SSH is a secure protocol used as the primary means of connecting to Linux servers remotely.

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