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350-601 · Question #446

Refer to the exhibit. A network engineer must configure an authentication solution for Cisco UCS with these conditions: - Two-factor authentication must be enabled for all UCS user authentication…

The correct answer is C. Remove the LDAP provider. To enable two-factor authentication and ensure AAA packets are encrypted using TCP port 49 for Cisco UCS, the LDAP provider should be removed, as these requirements are typically met by configuring a RADIUS or TACACS+ server.

Security

Question

Refer to the exhibit. A network engineer must configure an authentication solution for Cisco UCS with these conditions:

  • Two-factor authentication must be enabled for all UCS user

authentication.

  • All AAA packets must be encrypted and use TCP port 49 to establish

communication. Which set of actions needs these requirements?

Exhibit

350-601 question #446 exhibit

Options

  • ACreate the LDAP provider.
  • BCreate the RADIUS group mapping.
  • CRemove the LDAP provider.
  • DDelete the LDAP group mapping.

How the community answered

(37 responses)
  • A
    8% (3)
  • B
    3% (1)
  • C
    76% (28)
  • D
    14% (5)

Why each option

To enable two-factor authentication and ensure AAA packets are encrypted using TCP port 49 for Cisco UCS, the LDAP provider should be removed, as these requirements are typically met by configuring a RADIUS or TACACS+ server.

ACreate the LDAP provider.

Creating an LDAP provider would likely conflict with the requirements for two-factor authentication and full AAA packet encryption on TCP port 49 (TACACS+), as standard LDAP typically uses TCP 389 (unsecured) or 636 (LDAPS/encrypted).

BCreate the RADIUS group mapping.

Creating a RADIUS group mapping is a step towards implementing RADIUS, but the question asks for an action that *needs* these requirements, implying a change from a non-compliant state; removing the non-compliant LDAP provider would be a necessary prerequisite.

CRemove the LDAP provider.Correct

Two-factor authentication and the use of TCP port 49 (standard for TACACS+) or secure RADIUS (which encrypts entire packets) are characteristic features of RADIUS or TACACS+ implementations. LDAP, if not configured with LDAPS, does not provide full packet encryption and native two-factor authentication is not an inherent feature, making its removal necessary to implement a compliant solution.

DDelete the LDAP group mapping.

Deleting an LDAP group mapping removes specific authorization rules but does not eliminate the underlying LDAP authentication provider, which may still not meet the two-factor and encryption requirements.

Concept tested: Cisco UCS authentication providers (LDAP vs. RADIUS/TACACS+) and their features.

Source: https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/sw/gui/config/guide/3-1/b_UCSM_GUI_Configuration_Guide_3_1/b_UCSM_GUI_Configuration_Guide_3_1_chapter_01000010.html

Topics

#AAA protocols#UCS authentication#TACACS+#Security best practices

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