Once you log in, you will be returned to the library homepage. The word "proxy" should appear somewhere in the URL (e.g. uc.idm.oclc.org/). If you see that, you are in the proxy server. As you navigate to the online resource you're interested in using, if you get to your destination and you no longer have "proxy" in the URL, you may have fallen out of the proxy server.
Due to subscription and licensing agreements, certain library resources are restricted to UC faculty, staff, and currently enrolled students.