Duo is a two-factor authentication (2FA) service that can be integrated with websites, VPNs and cloud services. The Duo service can work with smartphones, personal computers, land lines and security tokens.
Two-factor authentication increases the security of online communications by making it harder for someone to masquerade as an authorized user. Duo's authentication factors are something the user knows (username and password) and something the user possesses (a device). Someone may be able to steal or guess the username and password but without verification from the user's device, they will not be able to use the login information.
Dartmouth is rolling out 2 factor authentication by service. Services requiring Duo include: VPN and Office 365 (as of May 13). If you aren't already enrolled in Duo please see Central IT's instructions for enrolling in Duo.
If you have any questions or run into any issues setting up Duo, please contact us at (603)650-1600.