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1.2.6 Ensure Multi-factor Authentication is Required for Azure Management (Manual)​

Profile Applicability​

• Level 1

Description​

For designated users, they will be prompted to use their multi-factor authentication (MFA) process on logins.

Rationale​

Enabling multi-factor authentication is a recommended setting to limit the use of Administrative actions and to prevent intruders from changing settings.

Impact​

There is an increased cost, as Conditional Access policies require Azure AD Premium. Similarly, they may require additional overhead to maintain if users lose access to their MFA.

Audit​

From Azure Portal​

  1. From Azure Home select the Portal Menu and select Azure Active Directory.
  2. Scroll down in the menu on the left, and select Security.
  3. Select on the left side Conditional Access.
  4. Select the policy you wish to audit.
  5. View under Users and Groups the corresponding users and groups to whom the policy is applied.
  6. View under Exclude to determine which Users and groups to whom the policy is not applied.

Remediation​

From Azure Portal​

  1. From Azure Home select the Portal Menu and select Azure Active Directory.
  2. Scroll down in the menu on the left, and select Security.
  3. Select on the left side Conditional Access.
  4. Click the + New policy

References​

https://docs.microsoft.com/en-us/security/benchmark/azure/security-controls-v3-identity-management#im-7-restrict-resource-access-based-on--conditions
https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/concept-conditional-access-users-groups

Additional Information​

These policies should be tested by using the What If tool in the References. Setting these can and will create issues with administrators changing settings until they use an MFA device linked to their accounts. An emergency access account is recommended for this eventuality if all administrators are locked out. Please see the documentation in the references for further information. Similarly further testing can also be done via the insights and reporting resource in References which monitors Azure sign ins.