Faculty, staff, and students are required to use Duo Security two-factor authentication when logging in to the University's VPN service or Office 365 applications, including RU email.
Duo strengthens security by requiring two factors to verify your identity: something you know, such as your RUNetID and passphrase, plus something you have, such as a mobile device or hardware token.
Download Duo Mobile, enroll your device, and choose an authentication method. A landline, non-smartphone, or hardware token can also be used.
New to Rockefeller? Start enrollment or manage your default Duo settings and enrolled devices through the RUNet Portal.
Use your Duo enrollment email or begin setup when prompted by a Duo-protected application.
Open the RUNet Portal →Activate Duo on a new phone or tablet, or enroll an additional authentication method.
View activation instructions →Change your default device or authentication method from the Duo prompt.
Manage devices on Duo →Install the app for iPhone or Android to receive push notifications and generate passcodes.
Find Duo Mobile →
Duo does not replace or require you to change your username and password. It adds a second layer of security to your existing login method.
Duo Mobile is a mobile application that you install on your smartphone or tablet to generate passcodes for login or receive push notifications (recommended) for easy, one-tap authentication on your mobile device. It works with Duo Security's two-factor authentication (2FA) service to make your logins more secure.
If you are new to Rockefeller or are an existing employee who has never enrolled in Duo, there are two ways to create a Duo account:

Duo gives you several authentication options, including sending a push or calling. You can set Duo to automatically use a preferred authentication method for each device that you have enrolled. To open the Duo prompt, log in to any Duo-protected application, such as VPN. When the prompt appears, select Settings > My Settings & Devices. For detailed instructions, visit the Duo website.


Have a new phone? You'll need to enroll it before you can use Duo on it. Open the Duo prompt by logging in to a Duo-protected application, such as VPN. When the prompt appears, select Settings > Add a new Device. For detailed instructions, visit the Duo website.


No. Having a smartphone makes for an easier and more secure experience with the Duo Push one-tap authentication feature. However, you can also enroll a non-smartphone mobile device or landline to receive SMS passcodes or phone calls. Authentication via hardware token is also available.

When logging in to an application that is protected by Duo, you will still enter your username and password. After inputting your login information, Duo requires you to approve a Duo Push notification or other method of two-factor authentication. Duo does not replace or require you to change your username and password — think of Duo as a layer of security added to your pre-existing login method. Watch the video below to see Duo Push in action.

If you have a smartphone or tablet, we recommend Duo Push, as it is quick, easy-to-use, and secure. See an introduction to Duo Security and a demonstration of Duo Push in the short video below.
If you have created custom email filters or rules, you may need to check your junk or spam folder for the enrollment email.
Duo Push authentication requests require a minimal amount of data — less than 2KB per authentication.
There are several reasons this could be happening. Please try the following troubleshooting suggestions:
Yes. In the Duo Mobile app, generate a passcode by tapping the key icon. The passcode will appear underneath. If you have a hardware token, you can press the button. If you know in advance that you will have no signal or WiFi access, test one or more of these options beforehand. See the Duo Knowledge Base article for more information.
Please contact the IT Help Desk immediately by phone at (212) 327-8940 or email.
No. Your passphrase is only verified by your organization and is never sent to Duo. Duo provides only the second factor, using your enrolled device to verify it's actually you who is logging in.
No. The Duo Mobile app has no access to change settings or remotely wipe your phone. The visibility Duo Mobile requires is to verify the security of your device, such as OS version, device encryption status, and screen lock. This is used to help recommend security improvements to your device — you are always in control of whether to act on those recommendations.
If you get a new phone or factory reset your phone: reinstall the Duo app on the new phone and follow these instructions to activate Duo via the RUNet Portal.
If you get a new SIM card but are using the same phone, your Duo app will still work.
To authenticate from the Duo app on your old phone while you're setting up the new one:

Bypass codes or hardware tokens are available as an alternative to the Duo App.

Yes. All international phone numbers are supported in Duo using the following format: Country code + National Destination Code + Phone Number. Example, in Switzerland: +41 33 123456789.
Duo Mobile only accesses your camera when scanning a QR code during activation. You can also receive an activation link via email.
No. The Duo app is installed on a mobile device such as a phone or tablet, not a laptop.
Your Duo will automatically lock after 10 failed login attempts. The lockout will expire after 15 minutes.
Make sure you entered the correct code and that your token is right side up. It is possible that your token is out of sync. Press the green button to turn off the Duo token, press it again, and enter the newly displayed code to log in. If your login fails, repeat this process two more times. Contact the IT Help Desk at x8940 if you still need help.
If you have not used Duo in over 30 days or made several failed attempts to log in, you may need to resynchronize your Duo account. Close the mobile app on your smartphone, then reopen it and enter the passcode. You may need to repeat this process once more before logging in successfully. Contact the IT Help Desk at x8940 if you still need help.
Login credentials are more valuable than ever and are increasingly easy to compromise. Over 90% of breaches today involve compromised usernames and passwords. Two-factor authentication enhances the security of your account by using a secondary device to verify your identity. This prevents anyone but you from accessing your VPN account and the Rockefeller network, even if they know your password.

Yes, but there is a limitation for iOS devices. Android users can select the type of Duo authentication to use, such as Send Me a Push, Call Me, or Enter a Passcode. For iOS users, Pulse Secure defaults to using Push notification to the primary phone on file. Users with a Duo hardware token should click "Click here if you need to enter a second factor passcode" under the Sign In button before tapping Sign In. iOS users without a hardware token or a mobile device registered with Duo who use Push or the Duo Security mobile application will not be able to connect using the Pulse Secure mobile application on their iOS device.


Watch the appropriate short video to learn how to use Duo Push, passcodes, phone callback, SMS, or a hardware token. Click a video to play it.
Contact the IT Help Desk at (212) 327-8940 or by email.