HomeServicesLibrary TechnologyOff-Campus Access

Off-Campus Access

Report an Access Problem  |  Frequently Asked Questions 


Off-campus access to most library licensed e-resources is through a service called EZproxy. This service works by using links that have a prefix prepended to the front of the URL of an e-resource, for example:

If you come from an IP address for Yale University or Yale New Haven Hospital, you will not be prompted to authenticate. If you come from a network location outside of the IP ranges for Yale University or Yale New Haven Hospital, the URL prefix will prompt you to authenticate.

Yale University users should authenticate using Yale CAS (with DUO multifactor authentication), and YNHH users should use their Epic credentials to authenticate.

EZproxy does not require any installation or setup. All you need is a properly prefixed URL for the e-resource you are trying to access. Links to these resources on the Medical Library website have been updated with the prefix.

If you have bookmarked a direct URL to a specific resource, you should update your bookmark with the latest link from our website. However, starting your research from the library website is the easiest way to make sure that you are using the most up-to-date links to e-resources.

Frequently Asked Questions from Yale University Library

Need help? Please contact

Yale VPN & DUO Multifactor Authentication

While the Library uses EZproxy as the primary method of off-campus access, the University's VPN service continues to be a valid method of remote access to library e-resources. If you are connected to the University's VPN, you are considered on campus and will not be prompted to log into EZproxy.

If you want to use the VPN to access Yale resources, visit the ITS VPN service page.

You'll also need to download DUO - Multifactor Authentication. Yale automatically creates your account at DUO Security, Yale's multifactor authentication provider, when your Yale affiliation is established. Once your DUO account has been created, enrollment in the multifactor authentication will be initiated via an email or upon entry into a protected resource.

Need help? ITS HELP desk: 203-432-9000 or visit our Walk-in Computer Support Center (located on the lower level of the Cushing/Whitney Medical Library).

Access from Clinical Locations

This page provides information on offsite access options at some of the major clinical rotation sites, including Yale-New Haven Medical Center, the West Haven VA, Waterbury Hospital, Bridgeport Hospital and the Connecticut Mental Health Center.

Frequently Asked Questions

The Cushing/Whitney Medical Library is here to support you with access to resources and services during the COVID-19 outbreak.  Below are answers to frequently asked questions on how to use the library’s collection of journals, databases, e-books, and other clinical resources. 

How do I get access to library collections?

If you are physically at the Yale New Haven Hospital, York St. or St. Raphael campuses, you can access the library’s collections through any networked computer.

If you are not at YNHH, you will need to authenticate with your Yale or YNHH credentials via EZproxy.  If you have Yale University credentials through an appointment at the Yale School of Medicine, you can also use the Yale VPN

Can I get access to resources in Epic?

Certain point-of-care resources are available to all clinicians within the Yale New Haven Health System through Epic.  This includes UpToDate, DynaMed Plus, AccessMedicine, ClinicalKey, and Micromedex.  When accessing Epic through the Citrix software you will see a globe icon on the toolbar, select the dropdown menu next to this. 

Epic menu

Hover over the “Library Services” tab to see the list of available resources.

library services on epic

Can I access library resources on my phone?

Yes, many resources are optimized for mobile access and some publishers offer an app.  The library maintains a page of mobile apps to streamline collections access. 

Can I request new resources?

Yes, please send any requests to Lindsay Barnett,  The library is working to support new collection requests where budget and electronic availability allow. 

Where can I find more information?

Contact your departmental liaison or the Clinical Librarian Team at and keep up with what the library is doing through our Online Services and Resources from the Medical Library page