If you DO NOT have a SISSA email but you are a visitor in SISSA you can install matlab on your laptop and use it staying connected to the SISSA network.
If you are at home, use the VPN

You can download Matlab here, and use this license file

• Decide which version to install and ask to helpdesk@sissa.it the File Installation Key for that Matlab version
• Unpack the Matlab zip installation files (or mount the iso image) and run the installer
• Click on “Have an Installation Key” checkbox
• When the Installer present you a long list of Matlab toolboxes to install, DO NOT CHECK the License Manager package because this is only for the Matlab License Server.