Question 1

You have been asked to send RADIUS debug messages from an ArubaOS-CX switch to a central SIEM
server at 10.5.15.6. The server is already defined on the switch with this command: logging 10.5.6.12
You enter this command: debug radius all
What is the correct debug destination?

Accepted Answer

C

Explanation: 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.

Question 2

A company has Aruba Mobility Controllers (MCs), Aruba campus APs, and ArubaOS-Switches. The
company plans to use ClearPass Policy Manager (CPPM) to classify endpoints by type. This company
is using only CPPM and no other ClearPass solutions.
The ClearPass admins tell you that they want to use HTTP User-Agent strings to help classify
endpoints.
What should you do as a part of configuring the ArubaOS-Switches to support this requirement?

Accepted Answer

C

Explanation: ArubaOS-Switches can use sFlow technology to sample network traffic and send the samples to a collector, such as ClearPass Policy Manager (CPPM), for analysis. sFlow can be configured to capture various types of traffic, including HTTP, which typically contains User-Agent strings that can be used for device fingerprinting and classification. To support the requirement for using HTTP User-Agent strings to classify endpoints, the switches would need to be configured to send sFlow samples containing HTTP traffic to CPPM. CPPM would then analyze these samples and use the User-Agent strings to classify the devices. Therefore, the correct action to configure ArubaOS-Switches would involve: Configuring CPPM as the sFlow collector on the switches. Enabling sFlow on the edge ports that connect to endpoints. This approach allows the network traffic to be analyzed by CPPM without requiring any additional mirroring or redirection of traffic, which would be resource-intensive and potentially disruptive to network performance. Reference: Information on configuring sFlow on ArubaOS-Switches is typically available in the official Aruba documentation provided by Hewlett Packard Enterprise (HPE).

Question 3

You need to deploy an Aruba instant AP where users can physically reach It. What are two recommended options for enhancing security for management access to the AP? (Select two )

Accepted Answer

Explanation: When deploying an Aruba Instant AP in a location where users can physically access it, enhancing security for management access could involve several measures: C. Disabling the Web UI will prevent unauthorized access via the browser-based management interface, which could be a security risk if the AP is within physical reach of untrusted parties. E. Installing a CA-signed certificate helps ensure that any communication with the AP's management interface is encrypted and authenticated, preventing man-in-the-middle attacks and eavesdropping. Reference: Aruba Instant AP deployment guides commonly include recommendations for securing management access to prevent unauthorized configuration changes or data breaches.

Question 4

What is a consideration for implementing wireless containment in response to unauthorized devices discovered by ArubaOS Wireless Intrusion Detection (WIP)?

Accepted Answer

C

Explanation: When implementing wireless containment as a response to unauthorized devices, a company should consider the legal implications. Wireless containment might affect devices that are not part of the company's network and could be considered as a form of interference. This could have legal consequences, and therefore, such actions should be carefully reviewed and ideally should be performed in a targeted and controlled manner, reducing the risk of legal issues.

Question 5

What is a use case for implementing RadSec instead of RADIUS?

Accepted Answer

C

Explanation: RadSec (RADIUS over TLS) is a protocol for transporting RADIUS messages over TLS-encrypted TCP/IP networks. The primary use case for implementing RadSec instead of traditional RADIUS is to protect RADIUS communications, particularly when those messages must travel across an untrusted network, such as the internet. RadSec provides confidentiality, integrity, and authentication for RADIUS traffic between clients and servers which may not be within a single secure network. In the case of a school district that wants to ensure the security of messages sent between RADIUS clients and servers over potentially insecure networks, RadSec would be the appropriate choice.

Question 6

What correctly describes the Pairwise Master Key (PMK) in thee specified wireless security protocol?

Accepted Answer

A

Explanation: In WPA3-Enterprise, the Pairwise Master Key (PMK) is indeed unique for each session and is derived using a process called Simultaneous Authentication of Equals (SAE). SAE is a new handshake protocol available in WPA3 that provides better security than the Pre-Shared Key (PSK) used in WPA2. This handshake process strengthens user privacy in open networks and provides forward secrecy. The information on SAE and its use in generating a unique PMK can be found in the Wi-Fi Alliance's WPA3 specifications and related technical documentation.

Question 7

Your ArubaoS solution has detected a rogue AP with Wireless intrusion Prevention (WIP). Which information about the detected radio can best help you to locate the rogue device?

Accepted Answer

B

Explanation: When an ArubaOS solution detects a rogue AP with Wireless Intrusion Prevention (WIP), the most crucial information that can help locate the rogue device is the detecting devices. This is because the detecting devices can provide the physical location or the network topology context where the rogue AP has been detected1. The detecting devices are typically the Air Monitors (AMs) or Access Points (APs) in the network that have identified the rogue AP’s presence. These devices can provide information such as the signal strength and the direction from which the rogue AP’s signals are being received. By triangulating this information from multiple detecting devices, it becomes possible to pinpoint the physical location of the rogue AP2. Additionally, the detecting devices can log events and alerts that can be reviewed to understand the rogue AP’s behavior, such as the channels it is operating on and the potential impact on the authorized wireless network1. This information is vital for network administrators to quickly and effectively respond to the threat posed by the rogue AP. In contrast, the match method (A) and match type © relate to how the rogue AP is classified and identified by the system, which is useful for classification but not for physical location. The confidence level (D) indicates the system’s certainty in the classification but does not aid in locating the device2.

Question 8

A company is deploying ArubaOS-CX switches to support 135 employees, which will tunnel client
traffic to an Aruba Mobility Controller (MC) for the MC to apply firewall policies and deep packet
inspection (DPI). This MC will be dedicated to receiving traffic from the ArubaOS-CX switches.
What are the licensing requirements for the MC?

Accepted Answer

B

Explanation: When deploying ArubaOS-CX switches that tunnel client traffic to an Aruba Mobility Controller (MC), the licensing requirements typically involve Policy Enforcement Firewall (PEF) licenses. These licenses enable the MC to enforce firewall policies and perform deep packet inspection (DPI). Therefore, for each switch tunneling traffic to the MC, a PEF license would be necessary. Reference: Aruba's licensing documentation provides details about the different types of licenses available and their use cases, such as PEF licenses for applying firewall rules and conducting DPI on tunneled traffic.

Question 9

Refer to the exhibit. https://kxbjsyuhceggsyvxdkof.supabase.co/storage/v1/object/public/file-images/HPE6-A78/page_54_img_1.jpg What is another setting that you must configure on the switch to meet these requirements?

Accepted Answer

A

Explanation: To meet the requirements for configuring an ArubaOS-CX switch for integration with ClearPass Policy Manager (CPPM), it is necessary to set the AAA authentication login method for SSH to use the “radius” server-group, with “local” as a backup. This ensures that when an admin attempts to SSH into the switch, the authentication request is first sent to CPPM via RADIUS. If CPPM is unavailable, the switch will fall back to using local authentication12. Here’s why the other options are not correct: Option B is incorrect because configuring a CPPM username and password on the switch that matches a CPPM admin account is not required for SSH login; rather, the switch needs to be configured to communicate with CPPM for authentication. Option C is incorrect because while CPPM will send Aruba-Admin-Role Vendor-Specific Attributes (VSAs), the switch does not need to have port-access roles created with the same names; it needs to interpret the VSA to assign the correct role. Option D is incorrect because disabling SSH on the default VRF and enabling it on the mgmt VRF is not related to the authentication process with CPPM. Therefore, the correct answer is A, as setting the AAA authentication login method for SSH to the “radius” server-group with “local” as backup is a key step in ensuring that the switch can authenticate admins through CPPM while providing a fallback method12.

Question 10

You are troubleshooting an authentication issue for Aruba switches that enforce 802 IX10 a cluster of
Aruba ClearPass Policy Manager (CPPMs) You know that CPPM Is receiving and processing the
authentication requests because the Aruba switches are showing Access-Rejects in their statistics
However, you cannot find the record tor the Access-Rejects in CPPM Access Tracker
What is something you can do to look for the records?

Accepted Answer

A

Explanation: If Access-Reject records are not showing up in the CPPM Access Tracker, one action you can take is to ensure that the CPPM cluster settings are configured to display Access-Rejects. Cluster-wide settings in CPPM can affect which records are visible in Access Tracker. Ensuring that these settings are correctly configured will allow you to view all relevant authentication records, including Access- Rejects. : ClearPass Policy Manager documentation that includes information on cluster settings and Access Tracker configurations. Troubleshooting guides for ClearPass that provide steps to resolve issues with viewing authentication records.

Question 11

What is one method for HPE Aruba Networking ClearPass Policy Manager (CPPM) to use DHCP to classify an endpoint?

Accepted Answer

A

Explanation: HPE Aruba Networking ClearPass Policy Manager (CPPM) uses device profiling to classify endpoints, and one of its passive profiling methods involves analyzing DHCP traffic. DHCP fingerprinting is a technique where ClearPass examines the DHCP packets sent by a client, particularly the DHCP Discover packet, to identify the device’s operating system or type based on specific attributes. Option A, "It can determine information such as the endpoint OS from the order of options listed in Option 55 of a DHCP Discover packet," is correct. DHCP Option 55 (Parameter Request List) is a field in the DHCP Discover packet where the client specifies the list of DHCP options it requests from the server. The order and combination of these options are often unique to specific operating systems or device types (e.g., Windows, Linux, macOS, or IoT devices). ClearPass maintains a database of DHCP fingerprints and matches the Option 55 data against this database to classify the endpoint. Option B, "It can respond to a client’s DHCP Discover with different DHCP Offers and then analyze the responses," is incorrect because ClearPass does not act as a DHCP server or send DHCP Offers. It passively snoops DHCP traffic rather than actively responding to DHCP requests. Option C, "It can snoop DHCP traffic to register the clients’ IP addresses," is partially correct in that ClearPass does snoop DHCP traffic, but the purpose is not just to register IP addresses for HTTP probing. While ClearPass can use IP addresses for active probing (e.g., HTTP or SNMP), the question specifically asks about using DHCP to classify, which is done via fingerprinting, not IP registration. Option D, "It can alter the DHCP Offer to insert itself as a proxy gateway," is incorrect because ClearPass does not modify DHCP packets or act as a proxy gateway. This is not a function of ClearPass in the context of DHCP-based profiling. The HPE Aruba Networking ClearPass Policy Manager 6.11 User Guide states: "ClearPass can profile devices using DHCP fingerprinting, a passive profiling method. When a device sends a DHCP Discover packet, ClearPass examines the packet’s attributes, including the order of options in DHCP Option 55 (Parameter Request List). The combination and order of these options are often unique to specific operating systems or device types. ClearPass matches these attributes against its DHCP fingerprint database to classify the device (e.g., identifying a device as a Windows 10 laptop or an Android phone)." (Page 247, DHCP Fingerprinting Section) Additionally, the ClearPass Device Insight Data Sheet notes: "DHCP fingerprinting allows ClearPass to passively collect device information without interfering with network traffic. By analyzing DHCP Option 55, ClearPass can accurately determine the device’s operating system and type, enabling precise policy enforcement." (Page 3) : HPE Aruba Networking ClearPass Policy Manager 6.11 User Guide, DHCP Fingerprinting Section, Page 247. ClearPass Device Insight Data Sheet, Page 3. ===========

Question 12

What are the roles of 802.1X authenticators and authentication servers?

Accepted Answer

C

Explanation: In the 802.1X network access control model, the roles of the authenticator and the authentication server are distinct yet complementary. The authenticator acts as a RADIUS client, which is a network device, like a switch or wireless access point, that directly interfaces with the client machine (supplicant). The authentication server, typically a RADIUS server, is responsible for verifying the credentials provided by the supplicant through the authenticator. This setup helps in separating the duties where the authenticator enforces authentication but does not decide on the validity of the credentials, which is the role of the authentication server. : IEEE 802.1X standard for network access control.

Question 13

What is a correct guideline for the management protocols that you should use on ArubaOS-Switches?

Accepted Answer

C

Explanation: In managing ArubaOS-Switches, the best practice is to disable less secure protocols such as Telnet and use more secure alternatives like SSH (Secure Shell). SSH provides encrypted connections between network devices, which is critical for maintaining the security and integrity of network communications. This guideline is aligned with general security best practices that prioritize the use of protocols with strong, built-in encryption mechanisms to prevent unauthorized access and ensure data privacy. Reference: This is a general network management and security practice recommended across various platforms, including but not limited to ArubaOS-Switch documentation and other network security resources.

Question 14

What role does the Aruba ClearPass Device Insight Analyzer play in the Device Insight architecture?

Accepted Answer

D

Explanation: The Aruba ClearPass Device Insight Analyzer plays a crucial role within the Device Insight architecture by residing in the cloud and applying machine learning and supervised crowdsourcing to the metadata sent by Collectors. This component of the architecture is responsible for analyzing vast amounts of data collected from the network to identify and classify devices accurately. By utilizing machine learning algorithms and crowdsourced input, the Device Insight Analyzer enhances the accuracy of device detection and classification, thereby improving the overall security and management of the network. : Aruba ClearPass official documentation and whitepapers that detail the functionality and deployment of the Device Insight Analyzer. Technical articles and presentations on network security solutions that discuss the use of machine learning and data analytics in device management.

Question 15

What is one thing can you determine from the exhibits?

Accepted Answer

A

Explanation: Based on the exhibits which seem to show RADIUS authentication and CoA logs, one can determine that CPPM (ClearPass Policy Manager) initially assigned the client to a role meant for non-profiled devices and then sent a CoA to the network access device (authenticator) once the device was categorized. This is a common workflow in network access control, where a device is first given limited access until it can be properly identified, after which appropriate access policies are applied.

Free HP HPE6-A78 Actual Exam Questions