## Multi-Factor Authentication Parallels RAS allows you to use multi-factor authentication for access control. When multi-factor authentication is used, users will have to authenticate through two successive stages to get the application list. While the first level will always use native authentication (Active Directory / LDAP), the second level can use one of the following solutions: Azure MFA (RADIUS) Duo (RADIUS) FortiAuthenticator (RADIUS) TekRADIUS Deepnet SafeNet Google Authenticator Multi-factor authentication is more secure because instead of using a standard user name and password, it uses a static user name and a one-time password generated by a token. Multi-factor authentication can be configured in the Parallels RAS Console in Connection / Multi-factor authentication. See also Configuring Exclusion Rules.