Configure the operating system to implement multifactor authentication by
installing the required package with the following command:
The libpam-pkcs11 package can be installed with the following command:
$ apt-get install libpam-pkcs11
Using an authentication device, such as a CAC or token that is separate from
the information system, ensures that even if the information system is
compromised, that compromise will not affect credentials stored on the
authentication device.
Multifactor solutions that require devices separate from
information systems gaining access include, for example, hardware tokens
providing time-based or challenge-response authenticators and smart cards such
as the U.S. Government Personal Identity Verification card and the DoD Common
Access Card.