In the secondary password field, type push and click Connect.After entering your network login username and password in a Duo Enabled application (e.g., Pulse Secure VPN client,, Outlook Web Access), you will be prompted for a secondary password.Bypass codes must be requested in advance and only by the person who will use them. Bypass code: This is a temporary passcode that you can use as your secondary authentication method.YubiKey: This is a physical USB key that you plug into a computer to provide secondary authentication. For more detail on this option, see the YubiKey section below.To use this option, you must register your landline's phone number on. This is a less secure option, since anyone can answer the phone. Voice: This is most commonly used in a situation where there is no cell service but a LAN line is available to receive a phone call.SMS Text: This does not require a smartphone instead, it uses SMS text messaging in the authentication process.Duo Passcode: This also requires the Duo Mobile application installed to a smartphone but does not require an internet connection.Duo Push: The most common and recommended way users utilize two-factor authentication. This requires (1) either an Android or an Apple smartphone with the application installed and enrolled to your Active Directory account, and (2) an internet connection.Duo offers the following methods of authentication:

Add yubikey to duo