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.
There are several ways to connect to library resources from off-campus.
The libproxy browser bookmarklet adds the library's libproxy prefix to a URL. When you are not on the campus network click on the bookmarklet to access licensed library resources that you've found via non-UCB sites such as Google, Google Scholar, email links, Twitter, etc.
To take advantage of libproxy you will need to make sure your browser is configured to:
The browser bookmarklet can be added to iOS, Android and most browsers including Chrome, Safari, Firefox, and IE.
Step-by-step instructions: