Use any terminal program and connect to the MSI login system with the following command:
ssh -X firstname.lastname@example.org
The -X allows X forwarding, which will allow you to launch graphical tools remotely. Once you are on login.msi.umn.edu you can ssh to the MSI machine of your choice.
If you'd prefer to connect via a single command (though you will need to type your password twice), use the following command after replacing the username and resource name:
ssh -X -t email@example.com ssh -X resource_name.msi.umn.edu