Why doesn't my wired network connection in MSI's Walter space work with my new machine? It worked with my old machine.

Security at MSI is a major concern. To prevent intrusions and/or damage to systems, MSI uses port security. When an unknown machine is plugged in to a dedicated wall jack for your old machine, the network connection is blocked and the jack deactivated. We apologize for the inconvenience but returning the connection to the old machine will not restore network connectivity. Contact help@msi.umn.edu (612-626-0802; 587 Walter Library) with your office number and jack label, and specify whether you intend to use the old or new machine.