Port
All shared hosting servers use a non-default SSH port to reduce automated brute-force noise. SSH listens on port 831. Username, hostname, and password depend on your product. Use the cPanel or Grid Hosting article so you get the credentials for that product.cPanel
Connect with your cPanel username, server hostname, and cPanel password.
Grid Hosting
Connect with the main account username and password from when the account was provisioned.
Connect
username and your-server-hostname with your SSH username and server hostname.
SFTP uses the same username, hostname, and port.