To access licensed (subscribed) library resources found via non-UCB sites such as Google, Google Scholar, email links, Twitter, etc, you can add the EZProxy bookmarklet to your browser. Then, whenever you land on a licensed library resource, select your EZproxy bookmarklet to enable CalNet.
While the UC Berkeley Library provides access to thousands of online resources (ejournals, ebooks, databases, etc.) most of them are only available to authorized users (current faculty, students and staff and, in most cases, on-site visitors).
Without the right set up that allows you to authenticate, you will be locked out of these resources.
No authentication needed
No further authentication needed if you are
logged into a computer connected to a UC Berkeley IP address
connecting via AirBears or eduroam
using a public workstation in a UC Berkeley Library