4/18/2023 0 Comments Duo app for windows 10![]() This prompt presents the user with a drop-down menu to select one of their Duo enrolled devices such as a phone, tablet, or security key device. If their credentials are determined to be valid, a Duo authentication prompt window appears while the computer remains locked. ![]() A user enters their credentials (local or domain account) to the computer via the local login prompt or via the RDP client. ![]() When a computer has Duo installed and configured to enforce MFA (either using a local Duo agent installation or deployment via GPO), the login flow for a user is as follows. Additionally, at the time of this writeup, Duo MFA integration when using Restricted Admin Mode RDP is not supported. Duo does not enforce MFA on endpoints for other services and logon methods such as when using PowerShell, scheduled tasks, SMB, WMI, PsExec, or WinRM. Duo can then enforce MFA when a user logs into Windows either locally or using the remote desktop protocol (RDP), or when a user account control (UAC) elevation is required. Duo Authentication in Windows and ADĭuo integrates with Microsoft Windows via a software agent (Duo Authentication for Windows Logon) that must be installed on endpoints. A background on how Duo authentication works on a Windows computer or in an AD environment will help understand the abuses and misconfigurations. Duo authentication policies allow for fine-grained control over MFA requirements and MFA flows. Duo client-side configurations, service settings, and agent deployments can be configured either manually on endpoints, or by using AD group policy objects (GPOs). ![]() Client-side configuration settings help support a wide range of use-cases and can be configured for offline access in the event of Internet or Duo API connectivity issues. This helps secure workstations against compromised credentials by requiring users to fulfil MFA requirements in order to logon to computers.
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