Cisco Duo

Cisco Duo ("Duo") is a cloud-based software service that provides customers additional layers of security designed to protect access to proprietary and third party applications. Most applications only require a username and password prior to allowing a user to login.

When protected with Duo, the username and password will first be verified on the customer/application side (or with the assistance of Duo-hosted SSO, depending on customer's settings) before triggering Duo’s two-factor workflow by requiring the user to take additional action before the login process can be completed (e.g. confirming login via Duo’s mobile app, SMS, phone call, or hardware token).

Customers can further check the security hygiene of user devices before granting access and block, notify, or restrict access for users with risky devices. Duo also allows customers to control which internal applications are accessible by different groups of users to limit exposure to sensitive information and enforce policies at an application level.