The Tanium Operating System (TanOS) must use multifactor authentication for network access to nonprivileged accounts.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-254848	SRG-OS-000106	TANS-OS-000330	SV-254848r986547_rule	2025-02-11	2

Description
To assure accountability and prevent unauthenticated access, nonprivileged 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:(i) Something you know (e.g., password/PIN); (ii) Something you have (e.g., cryptographic identification device, token); or (iii) Something you are (e.g., biometric). A nonprivileged account is any information system account with authorizations of a nonprivileged user. Network access is any access to an application by a user (or process acting on behalf of a user) where said access is obtained through a network connection. The DOD CAC with DOD-approved PKI is an example of multifactor authentication.

Description

To assure accountability and prevent unauthenticated access, nonprivileged 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:(i) Something you know (e.g., password/PIN); (ii) Something you have (e.g., cryptographic identification device, token); or (iii) Something you are (e.g., biometric). A nonprivileged account is any information system account with authorizations of a nonprivileged user. Network access is any access to an application by a user (or process acting on behalf of a user) where said access is obtained through a network connection. The DOD CAC with DOD-approved PKI is an example of multifactor authentication.

ℹ️ Check
1. Sign in to the TanOS console as a user with the tanadmin role. 2. Enter "C" to go to the "User Administration" menu. 3. Enter "M" to go to the "Multi-Factor Global Settings" menu. 4. If the status shows "Multi-Factor: Optional", this is a finding.

✔️ Fix
1. Sign in to the TanOS console as a user with the tanadmin role. 2. Enter "C" to go to the "User Administration" menu. 3. Enter "M" to go to the "Multi-Factor Global Settings" menu. 4. Enter "M" to "Require Multi-Factor Authentication". 5. Enter "E" to "Enable Require Multi-factor Authentication".