This solution deploys FreeRADIUS for Amazon WorkSpaces to the Amazon Web Services (AWS) Cloud. FreeRADIUS is an open source remote authentication dial-in user service (RADIUS) server. FreeRADIUS adds MFA for Amazon WorkSpaces by configuring a RADIUS server to authenticate one-time passwords.
https://aws.amazon.com/solutions/implementations/freeradius-mfa-with-amazon-workspaces/