MacOS is built on a version of Unix, so ssh is available directly from the Terminal application. To connect to the CAC general login node with ssh, you simply open a terminal window and type
The non-secure predecessor of SSH, telnet, is disabled for security reasons. If you are coming from a Microsoft Windows machine, an SSH2 client must first be installed, as described below. Nearly all Unix/Linux varieties (including Mac) already have a built-in SSH2 implementation, required by our clusters. Find help at Change a Password at First Login.įor basic command-line access, a Secure Shell (SSH) client will give you a remote command shell on one of the login nodes. Whichever method you choose, at your first login, you will be challenged for a new password (this does not apply to Red Cloud resources). You will have to locate and download an app to enable SSH or VNC connectivity even a browser plug-in may suffice. However, much of the material carries over to mobile computing platforms such as tablets and smartphones. These instructions are intended mainly for users of personal computers and workstations. This is not as straightforward as it sounds, due to the need to set up a secure tunnel for the remote desktop first. Use VNC to get a remote desktop with multiple text and graphics windows. 
Use SSH together with X-Windows, which sends any interactive graphics back to your machine window-by-window through an SSH tunnel. Use SSH to open a Linux shell on a login node, which provides a text-only interface. There are three distinct ways to connect to a remote Linux machine:
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