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NEW QUESTION # 18
Refer to the exhibit:
port-access role role1 vlan access 11
port-access role role2 vlan access 12
port-access role role3 vlan access 13
port-access role role4 vlan access 14
aaa authentication port-access dot1x authenticator
enable
interface 1/1/1
no shutdown
no routing
vlan access 1
aaa authentication port-access critical-role role1
aaa authentication port-access preauth-role role2
aaa authentication port-access auth-role role3
interface 1/1/2
no shutdown
no routing
vlan access 1
aaa authentication port-access critical-role role1
aaa authentication port-access preauth-role role2
aaa authentication port-access auth-role role3
The exhibit shows the configuration on an AOS-CX switch.
Client1 connects to port 1/1/1 and authenticates to HPE Aruba Networking ClearPass Policy Manager (CPPM). CPPM sends an Access-Accept with this VSA: Aruba-User-Role: role4.
Client2 connects to port 1/1/2 and does not attempt to authenticate.
To which roles are the users assigned?
Answer: A
Explanation:
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)
:
HPE Aruba Networking AOS-CX 10.12 Security Guide, 802.1X Authentication Section, Page 132.
HPE Aruba Networking AOS-CX 10.12 Security Guide, Port-Access Roles Section, Page 134.
NEW QUESTION # 19
A company has an ArubaOS controller-based solution with a WPA3-Enterprise WLAN. which authenticates wireless clients to Aruba ClearPass Policy Manager (CPPM). The company has decided to use digital certificates for authentication A user's Windows domain computer has had certificates installed on it However, the Networks and Connections window shows that authentication has tailed for the user. The Mobility Controllers (MC's) RADIUS events show that it is receiving Access-Rejects for the authentication attempt.
What is one place that you can you look for deeper insight into why this authentication attempt is failing?
Answer: B
NEW QUESTION # 20
What is a benefit of Opportunistic Wireless Encryption (OWE)?
Answer: A
Explanation:
Opportunistic Wireless Encryption (OWE) is a WPA3 feature designed for open wireless networks, where no password or authentication is required to connect. OWE enhances security by providing encryption for devices that support it, without requiring a pre-shared key (PSK) or 802.1X authentication.
Option C, "It allows anyone to connect, but provides better protection against eavesdropping than a traditional open network," is correct. In a traditional open network (no encryption), all traffic is sent in plaintext, making it vulnerable to eavesdropping. OWE allows anyone to connect (as it's an open network), but it negotiates unique encryption keys for each client using a Diffie-Hellman key exchange. This ensures that client traffic is encrypted with AES (e.g., using AES-GCMP), protecting it from eavesdropping. OWE in transition mode also supports non-OWE devices, which connect without encryption, but OWE-capable devices benefit from the added security.
Option A, "It allows both WPA2-capable and WPA3-capable clients to authenticate to the same WPA-Personal WLAN," is incorrect. OWE is for open networks, not WPA-Personal (which uses a PSK). WPA2/WPA3 transition mode (not OWE) allows both WPA2 and WPA3 clients to connect to the same WPA-Personal WLAN.
Option B, "It offers more control over who can connect to the wireless network when compared with WPA2-Personal," is incorrect. OWE is an open network protocol, meaning it offers less control over who can connect compared to WPA2-Personal, which requires a PSK for access.
Option D, "It provides protection for wireless clients against both honeypot APs and man-in-the-middle (MITM) attacks," is incorrect. OWE provides encryption to prevent eavesdropping, but it does not protect against honeypot APs (rogue APs broadcasting the same SSID) or MITM attacks, as it lacks authentication mechanisms to verify the AP's identity. Protection against such attacks requires 802.1X authentication (e.g., WPA3-Enterprise) or other security measures.
The HPE Aruba Networking AOS-8 8.11 User Guide states:
"Opportunistic Wireless Encryption (OWE) is a WPA3 feature for open networks that allows anyone to connect without a password, but provides better protection against eavesdropping than a traditional open network. OWE uses a Diffie-Hellman key exchange to negotiate unique encryption keys for each client, ensuring that traffic is encrypted with AES-GCMP and protected from unauthorized interception." (Page 290, OWE Overview Section) Additionally, the HPE Aruba Networking Wireless Security Guide notes:
"OWE enhances security for open WLANs by providing encryption without requiring authentication. It allows any device to connect, but OWE-capable devices benefit from encrypted traffic, offering better protection against eavesdropping compared to a traditional open network where all traffic is sent in plaintext." (Page 35, OWE Benefits Section)
:
HPE Aruba Networking AOS-8 8.11 User Guide, OWE Overview Section, Page 290.
HPE Aruba Networking Wireless Security Guide, OWE Benefits Section, Page 35.
NEW QUESTION # 21
What is a reason to set up a packet capture on an Aruba Mobility Controller (MC)?
Answer: B
Explanation:
Setting up a packet capture on an Aruba Mobility Controller (MC) is particularly useful in scenarios where detailed analysis of network traffic is necessary to identify and address security concerns. Option B is the correct answer because it directly addresses the need to closely examine the traffic of a potentially malicious wireless endpoint. Packet capture on the MC allows the security team to collect and analyze traffic to/from specific endpoints in real-time, providing valuable insights into the nature of the traffic and potentially identifying harmful activities. This capability is essential for forensics and troubleshooting security incidents, enabling administrators to respond effectively to threats.
:
Aruba Mobility Controller Configuration Guide
Aruba Networks Official Documentation
NEW QUESTION # 22
Refer to the exhibit.
How can you use the thumbprint?
Answer: A
NEW QUESTION # 23
......
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