Getting Started with SSH
A brief introduction to SSH
SSH, or Secure Shell, is a protocol that provides secure remote access to a computer over the Internet. It is commonly used to connect to a remote server or device, transfer files, and perform administrative tasks. Here's a beginner's guide to using SSH:
Using a password
- Installing an SSH client: To use SSH, you'll need an SSH client installed on your computer. There are many free SSH clients available for different operating systems, including PuTTY (Windows), Terminal (MacOS), and ssh (Linux).
- Connecting to a remote server: To connect to a remote server, you'll need to know the server's IP address or hostname, as well as the username and password for a valid account on that server. Use the following syntax to connect to the remote server using an SSH client:
ssh username@server_address
Using a private key
Instead of using a password to log in, you can also use a private key. A private key is a secure way to authenticate and is commonly used for automation scripts and other automated tasks. To use a private key, you'll need to generate a key pair and copy the public key to the remote server.
To understand how to create a public/private key pair to use with SSH checkout our handy guide for setting up a remote SSH server.
What can you do with SSH?
- Transferring files: SSH includes a feature called SFTP (Secure File Transfer Protocol), which allows you to securely transfer files between your local computer and the remote server. You can use a tool like scp (secure copy) to transfer files, or use an FTP client that supports SFTP.
- Port forwarding: SSH also supports port forwarding, which allows you to redirect network traffic from your local computer to a remote server. This can be useful for accessing services on the remote server that are not directly accessible from the Internet.
These are just a few of the basic features of SSH. With a little practice, you'll be able to use SSH to securely connect to remote servers and perform a variety of tasks.