Configuring Multifactor Authentication
You can configure two types of multifactor authentication in NetScaler Gateway:
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Cascading authentication that sets the authentication priority level
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Two-factor authentication that requires users to log on by using two types of authentication
If you have multiple authentication servers, you can set the priority of your authentication polices. The priority levels you set determine the order in which the authentication server validates users' credentials. A policy with a lower priority number takes precedence over a policy with a higher number.
You can have users authenticate against two different authentication servers. For example, you can configure an LDAP authentication policy and an RSA authentication policy. When users log on, they authenticate first with their user name and password. Then, they authenticate with a personal identification number (PIN) and the code from the RSA token.