Access to the Business School Webserver is provided by a username and password sent to you in an email. If you don't have an email with these details, and you feel you should have access, then please log a support call at https://supportme.chi.ac.uk or speak with your lecturer.
In your welcome email, you should have two SSH key files. These keys are used to authenticate with the server, and which key you use depends on the compatibility of the software you are planning to use. Save the files from the email to a convenient and secure location, as you will need these later.