The AIX operating system must be configured to authenticate using Multi Factor Authentication.

To assure accountability and prevent unauthenticated access, privileged and non-privileged users must utilize multifactor authentication to prevent potential misuse and compromise of the system. Multifactor authentication uses two or more factors to achieve authentication.

Factors include: 1. Something you know (e.g., password/PIN); 2. Something you have (e.g., cryptographic identification device, token); and 3. Something you are (e.g., biometric).

The DoW CAC with DoW-approved PKI is an example of multifactor authentication.

Verify the global "auth_type" is configured to use PAM:

# grep auth_type /etc/security/login.cfg |grep AUTH 

auth_type = PAM_AUTH

If "auth_type" is not set to "PAM_AUTH", this is a finding.

Verify that the user stanza is configured to use PAM:

# lssec -f /etc/security/login.cfg -susw -a auth_type

usw auth_type=PAM_AUTH

If "auth_type" is not set to "PAM_AUTH", this is a finding.

Run the following command to set the global and user stanza "auth_type":

# chsec -f /etc/security/login.cfg -susw -a auth_type=PAM_AUTH