From CCRMA Wiki
CCRMA has transitioned to a login based network access system called [Chillispot], which will simplify access by allowing CCRMA users to login to the wired and wireless Guestnet network with their login name and password (subject to a usage timeout), no matter what personal computer you are using. Your wired or wireless devices will each require a lease if you intend to use both.
Start your favorite web browser. If you do not already have an active lease on an IP address, you will be presented with a login screen like this: