HP HPE6-A78 Dumps Questions Answers

The scenario involves an AOS-CX switch configured for 802.1X port-access authentication. The configuration defines several roles and their associated VLANs:

port-access role role1 vlan access 11: Role1 assigns VLAN 11.

port-access role role2 vlan access 12: Role2 assigns VLAN 12.

port-access role role3 vlan access 13: Role3 assigns VLAN 13.

port-access role role4 vlan access 14: Role4 assigns VLAN 14.

The switch has 802.1X authentication enabled globally (aaa authentication port-access dot1x authenticator enable). Two ports are configured:

Interface 1/1/1:

vlan access 1: Default VLAN is 1.

aaa authentication port-access critical-role role1: If the RADIUS server is unavailable, assign role1 (VLAN 11).

aaa authentication port-access preauth-role role2: Before authentication, assign role2 (VLAN 12).

aaa authentication port-access auth-role role3: After successful authentication, assign role3 (VLAN 13) unless overridden by a VSA.

Interface 1/1/2: Same configuration as 1/1/1.

Client1 on port 1/1/1:

Client1 authenticates successfully, and CPPM sends an Access-Accept with the VSA Aruba-User-Role: role4.

In AOS-CX, the auth-role (role3) is applied after successful authentication unless the RADIUS server specifies a different role via the Aruba-User-Role VSA. Since CPPM sends Aruba-User-Role: role4, and role4 exists on the switch, Client1 is assigned role4 (VLAN 14), overriding the default auth-role (role3).

Client2 on port 1/1/2:

Client2 does not attempt to authenticate (i.e., does not send 802.1X credentials).

In AOS-CX, if a client does not attempt authentication and no other authentication method (e.g., MAC authentication) is configured, the client is placed in the preauth-role (role2, VLAN 12). This role is applied before authentication or when authentication is not attempted, allowing the client limited access (e.g., to perform authentication or access a captive portal).

Option A, "Client1 = role3; Client2 = role2," is incorrect because Client1 should be assigned role4 (from the VSA), not role3.

Option B, "Client1 = role4; Client2 = role1," is incorrect because Client2 should be assigned the preauth-role (role2), not the critical-role (role1), since the RADIUS server is reachable (Client1 authenticated successfully).

Option C, "Client1 = role4; Client2 = role2," is correct. Client1 gets role4 from the VSA, and Client2 gets the preauth-role (role2) since it does not attempt authentication.

Option D, "Client1 = role3; Client2 = role1," is incorrect for the same reasons as Option A and Option B.

The HPE Aruba Networking AOS-CX 10.12 Security Guide states:

"After successful 802.1X authentication, the AOS-CX switch assigns the client to the auth-role configured for the port (e.g., aaa authentication port-access auth-role role3). However, if the RADIUS server returns an Aruba-User-Role VSA (e.g., Aruba-User-Role: role4), and the specified role exists on the switch, the client is assigned that role instead of the auth-role. If a client does not attempt authentication and no other authentication method is configured, the client is assigned the preauth-role (e.g., aaa authentication port-access preauth-role role2), which provides limited access before authentication." (Page 132, 802.1X Authentication Section)

Additionally, the guide notes:

"The critical-role (e.g., aaa authentication port-access critical-role role1) is applied only when the RADIUS server is unavailable. The preauth-role is applied when a client connects but does not attempt 802.1X authentication." (Page 134, Port-Access Roles Section)

Public Key Infrastructure (PKI) relies on a trusted root Certification Authority (CA) to issue certificates. Devices and users must trust the root CA for the PKI to be effective. If a root CA certificate is not pre-installed or manually chosen to be trusted on a device, any certificates issued by that CA will not be inherently trusted by the device.

When configuring an ArubaOS-CX switch to send RADIUS debug messages to a central SIEM server, it is important to correctly direct these debug outputs. The command debug radius all activates debugging for all RADIUS processes, capturing detailed logs about RADIUS operations. If the SIEM server is already defined on the switch for logging purposes (as indicated by the command logging 10.5.6.12), the correct destination for these debug messages to be sent to the SIEM server would be through the syslog. This ensures that all generated logs are forwarded to the centralized server specified for logging, enabling consistent log management and analysis. Using syslog as the destination leverages the existing logging setup and integrates seamlessly with the network's centralized monitoring systems.