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What is SSH?

SSH stands for Secure Shell, a UNIX-based method of controlling computers remotely with some security features added that are not available in regular shells. Technically, SSH is a package of three different utilities: slogin, ssh, and scp. These are secure versions of rlogin, rsh, and rcp, ordinary utilities found in UNIX.

The difference between them lies mostly in encryption. Not only is login information kept more secure, any commands sent are similarly encrypted. This can be useful if you need to remotely control a server that is outside your organization’s firewall without exposing it to an unsecured internet connection.

For Mac and Linux users, you can connect directly to your server via SSH by using the terminal. See directions for how to do it in this article.

For Windows users, you will have to connect via SSH through a different application. We recommend PuTTY, a free program, for this. See directions for how to install and use it in this article.

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