HP HPE7-A02 Aruba Certified Network Security Professional Exam Exam Practice Test

To enable the detection of rogue APs with HPE Aruba Networking Wireless IDS/IPS (WIDS/WIPS) on AOS-10 APs managed in HPE Aruba Networking Central, each AP must have a Foundation with Security license. This license enables advanced security features, including rogue AP detection, which is crucial for maintaining a secure wireless environment and protecting against unauthorized access points.

To integrate HPE Aruba Networking ClearPass Policy Manager (CPPM) with HPE Aruba Networking ClearPass Device Insight (CPDI), one of the necessary tasks is to enable Insight in the CPPM server configuration settings. This configuration allows CPPM to communicate and share data with CPDI, facilitating the integration and enabling enhanced device profiling and policy enforcement capabilities.

1.Insight Enablement: Enabling Insight on the CPPM server allows it to leverage the data and capabilities of CPDI, integrating device profiling information into policy decisions.

2.Data Sharing: This integration ensures that CPPM can receive and use detailed device information from CPDI to make more informed policy enforcement decisions.

3.Configuration: Properly configuring the server settings to enable Insight ensures seamless communication and data flow between CPPM and CPDI.

HPE Aruba Networking SSE is a cloud-delivered Security Service Edge platform that provides secure web gateway, ZTNA, CASB/DLP, and cloud firewall functions. Threat detection for remote web browsing relies heavily on full traffic inspection, including SSL inspection, URL filtering, and malware scanning.

In Aruba SSE deployments that protect web access from campus/branch or remote users, you:

Integrate the on-prem gateway or AOS-10 environment with SSE using an external web profile, which defines how traffic is sent to SSE.

Within that profile, you enable SSL inspection so that SSE can decrypt and inspect HTTPS traffic, allowing advanced threat detection, DLP, and malware scanning.

Option A: Custom file security profiles can tune malware scanning, but using a non-default profile is not mandatory for basic threat detection.

Option B: SSE already includes built-in anti-malware and sandboxing; it doesn’t require a separate third-party antivirus integration for core features.

Option C: Connectors in SSE are used mainly to reach private applications (ZTNA), not to “reach remote users” for general web browsing.

Therefore, an essential part of enabling threat detection for web browsing is creating an external web profile that enables SSL inspection → Option D.

TACACS+ Enforcement Profile:

The profile specifies a Service Attribute under Aruba:Common with:

Name: Aruba-Admin-Role

Value: operators

AOS-CX Role Mapping:

On Aruba AOS-CX switches, the Aruba-Admin-Role attribute maps the authenticated user to predefined roles:

operators: Operator-level privileges (read-only access, limited commands).

administrators: Full administrator privileges.

Other roles like auditors may exist based on configuration.

Analysis:

The value operators explicitly maps the user to operator-level privileges, granting read-only access to the AOS-CX switch.

Since the Aruba-Admin-Role is correctly set and recognized, the switch assigns the appropriate role without errors.

Option Breakdown:

Option A: Correct. The switch assigns operator-level privileges based on the Aruba-Admin-Role value.

Option B: Incorrect. Administrator-level privileges require the role value to be administrators.

Option C: Incorrect. The manager is successfully authenticated and authorized; there is no error.

Option D: Incorrect. There is no reference to an auditor role in the configuration shown.

Conclusion:

The operators value in the TACACS+ enforcement profile ensures that the manager is assigned operator-level privileges on the AOS-CX switch.

Access to the Onboard portal is controlled by a dedicated Pre-Auth service in ClearPass Policy Manager:

The “ClearPass Onboard Service Pre-Auth” service defines which authentication sources (e.g., AD domain, local DB, guest) are used when users log into the Onboard web portal.

To restrict access to domain users only, you edit this Pre-Auth service to use only the Active Directory auth source (and appropriate authorization checks, such as group membership).

Exam and configuration references for ClearPass Onboard clearly identify the Onboard Pre-Auth service as the place where you control who can log into the Onboard portal.

Network Settings and Provisioning profiles in Onboard govern SSID, profiles, and device configuration, not portal user authentication.

The 802.1X services for wireless control network access after onboarding, not login to the onboarding portal itself.

Therefore, to limit the portal to domain users, you should edit the ClearPass Onboard Service Pre-Auth service on CPPM → Option B.

Implementing user-based tunneling (UBT) on AOS-CX switches is beneficial for applying enhanced security features such as deep packet inspection (DPI) to wired traffic. UBT allows the traffic from specific users or devices to be tunneled to a central controller or security appliance where advanced security policies, including DPI, can be applied. This approach ensures that even wired traffic benefits from the same level of security and inspection typically available for wireless traffic, thus enhancing overall network security.

ClearPass Role Mapping Policy:

The Endpoint namespace is used to reference attributes and tags related to endpoint devices.

Device Insight Tags are part of endpoint profiling information and are stored in the Endpoint Repository.

Option Analysis:

Option A: Correct. The Endpoint namespace includes Device Insight Tags.

Option B: Incorrect. TIPS refers to system attributes and configuration data, not endpoint tags.

Option C: Incorrect. Device is not a valid namespace in this context.

Option D: Incorrect. Application relates to application-level attributes, not Device Insight Tags.

To support 802.1X authentication and download user roles from HPE Aruba Networking ClearPass Policy Manager (CPPM) on AOS-CX switches, you must install the root CA certificate for CPPM's RADIUS certificate in a Trust Anchor (TA) profile on the switches. This ensures that the switches trust the RADIUS server certificate presented by CPPM during the authentication process.

1.Root CA Certificate: Installing the root CA certificate ensures that the switch can verify the authenticity of the RADIUS server certificate provided by CPPM.

2.Trust Anchor Profile: The TA profile on the switch holds the root CA certificate, establishing a trust relationship between the switch and the CPPM RADIUS server.

3.Secure Authentication: This setup is essential for securing the 802.1X authentication process and enabling the download of user roles.

Contextual Exchange for Better Decisions:

HPE Aruba ClearPass can integrate with third-party solutions like MDM and firewalls to exchange contextual information about endpoints (e.g., device type, posture, location).

This integration allows ClearPass and the third-party solutions to make better access control and security decisions.

For example:

An MDM can inform CPPM about device compliance, and CPPM can adjust enforcement policies dynamically.

Firewalls can receive updated context about users and devices to enforce policies more effectively.

Option Analysis:

Option A: Correct. Exchanging contextual information improves access control decisions.

Option B: Incorrect. CPPM does not provide signature-based threat detection.

Option C: Incorrect. CPPM does not offload policy decisions; it integrates for collaboration.

Option D: Incorrect. CPPM does not replace third-party traffic filtering capabilities.

In the exhibit, the HPE Aruba Networking Central settings for the 9x00 gateway show that traffic inspection is enabled, and the gateway is set to operate in IDS (Intrusion Detection System) mode with the fail strategy set to "Block". This configuration means that the gateway will drop traffic if it matches a rule in the active ruleset.

1.Active Ruleset: The ruleset version 9861 is active, and the gateway is configured to automatically update the ruleset daily.

2.Traffic Matching Rules: When traffic matches a rule in the active ruleset, it is flagged as suspicious or malicious.

3.Block Mode: Since the fail strategy is set to "Block", any traffic that matches a rule in the active ruleset will be dropped to prevent potential threats.

If VIA clients are not receiving IP addresses from the configured VPN pool, one setting to check is whether the pool is associated with the role to which the VIA clients are being assigned. The association between the IP pool and the role ensures that clients assigned to that role receive IP addresses from the correct pool.

1.Role Association: Each role can be associated with a specific IP pool, ensuring that clients assigned to the role receive addresses from the intended pool.

2.IP Allocation: Proper configuration of the IP pool and its association with the role is crucial for correct IP address allocation.

3.VIA Configuration: Ensuring that all settings, including IP pool associations, are correctly configured, facilitates seamless client connectivity.

To follow best security practices for 802.1X authentication settings in Windows domain clients:

Specify at least two server names under "Connect to these servers":

Admins should explicitly list trusted RADIUS server names (e.g., radius.example.com) to prevent the client from connecting to unauthorized or rogue servers.

This mitigates man-in-the-middle (MITM) attacks where an attacker attempts to present their own RADIUS server.

Select the desired Trusted Root Certificate Authority and "Don't prompt users":

Select the Trusted Root CA that issued the RADIUS server's certificate. This ensures clients validate the correct server certificate during the EAP-TLS/PEAP authentication process.

Enabling "Don't prompt users" ensures end users are not confused or tricked into accepting certificates from untrusted servers.

Why the other options are incorrect:

Option C: Incorrect. Wildcards in server names (e.g., *.example.com) weaken security and allow broader matching, increasing the risk of rogue servers.

Option D: Incorrect. Clearing "Use simple certificate selection" requires users to select certificates manually, which can lead to errors and usability issues. Simple certificate selection is recommended when properly configured.

Recommended Settings for Best Security Practices:

Server Validation: Specify the exact RADIUS server names in the "Connect to these servers" field.

Root CA Validation: Ensure only the correct Trusted Root Certificate Authority is selected.

User Prompts: Enable "Don't prompt users" to enforce automatic and secure authentication without user intervention.

To better interpret the packets shown in the Wireshark capture, you should choose to decode UDP port 5555 packets as ARUBA_ERM and set the Aruba ERM Type to 0. This configuration will allow Wireshark to properly decode and display the Aruba-specific encapsulated remote mirroring (ERM) packets, providing a clearer understanding of the traffic.

1.Decoding Protocols: Selecting the correct protocol decoding in Wireshark ensures that the captured packets are interpreted correctly, displaying the relevant information.

2.Aruba ERM: The packets in the capture are likely encapsulated remote mirroring (ERM) packets specific to Aruba, which require proper decoding settings in Wireshark.

3.Clear Interpretation: By setting the Aruba ERM Type to 0 and decoding the packets as ARUBA_ERM, you can view the encapsulated data accurately.

An HPE Aruba Networking Secure Web Gateway (SWG) is designed to provide secure internet access by monitoring and controlling web traffic. It primarily focuses on protecting users from malicious content and ensuring compliance with corporate security policies, particularly for hybrid and remote workers.

Explanation of Each Option

A. The organization needs a faster way to quarantine clients that have generated threats, as detected by third-party firewalls.

Incorrect:

Quarantining clients based on detected threats is typically managed by endpoint detection and response (EDR) solutions or next-generation firewalls (NGFWs).

While an SWG can monitor and block risky web activity, it does not manage threat quarantine actions directly.

B. Hybrid workers are exposing their computers to risky internet sites and infection by malware when they work from home.

Correct:

SWGs monitor and control web traffic to block malicious websites and prevent exposure to malware.

They enforce web usage policies even when users work remotely, protecting against phishing, drive-by downloads, and other web-based threats.

With the proliferation of hybrid work environments, an SWG ensures that users are protected from risky sites regardless of their location.

C. Remote workers need access to private data center applications without exposing those applications to unauthorized users.

Incorrect:

This use case falls under secure access service edge (SASE) solutions with Zero Trust Network Access (ZTNA), not an SWG.

ZTNA focuses on granting secure, conditional access to applications, while SWGs focus on internet traffic security.

D. The organization currently has no way to prevent users from exfiltrating sensitive data from SaaS applications.

Incorrect:

Data loss prevention (DLP) tools or cloud access security brokers (CASBs) are designed for monitoring and preventing data exfiltration from SaaS applications.

While SWGs can block access to specific websites or categories, they do not offer advanced DLP capabilities for SaaS environments.

References

Aruba Secure Web Gateway Documentation.

HPE Aruba SASE Solutions Guide.

Best Practices for Hybrid Workforce Security with Aruba SWG.

When the Active Endpoint Security Report on HPE Aruba Networking ClearPass indicates that endpoints have MAC addresses but no known IP addresses, one effective step to address this issue is to add CPPM's (ClearPass Policy Manager) IP address to the IP helper list on routing switches. This configuration ensures that DHCP requests are forwarded to the ClearPass server, allowing it to track and report the IP addresses assigned to the endpoints. This helps ClearPass maintain an accurate mapping of MAC addresses to IP addresses, improving endpoint visibility and security management.

Custom Device Fingerprinting on CPPM:

To create a custom fingerprint, you first need to connect a known device of that type to the network.

CPPM will discover the device in its Endpoints Repository, allowing you to analyze its attributes (e.g., MAC OUI, DHCP options) and create custom profiling rules.

Option Analysis:

Option A: Correct. Discovering a known device in the Endpoints Repository is a prerequisite for creating accurate custom fingerprint rules.

Option B: Incorrect. CPDI integration is not required for custom fingerprints on CPPM.

Option C: Incorrect. XML rules are not pre-defined; they are created dynamically based on observed attributes.

Option D: Incorrect. The "Automatically download Endpoint Profiler Fingerprints" setting is unrelated to custom profiling.

For ClearPass to periodically query Microsoft Intune / Endpoint Manager for device attributes (compliance, owner, OS, etc.), you must configure Intune as an authentication source in Policy Manager. The ClearPass–Intune integration is implemented through an API-based auth source which CPPM polls on a schedule; it is not done via Guest extensions or syslog/event sources.

Aruba’s Intune integration guides describe configuring a “Microsoft Intune” (or “Endpoint Manager”) authentication source in ClearPass and supplying the Azure app registration details so CPPM can poll Intune via Microsoft Graph.

Option A is incorrect: the Intune integration is not a ClearPass Guest extension.

Option B is insufficient: adding dictionaries only defines attributes; it does not enable scheduled polling.

Option D is incorrect: Intune is not used as a syslog/event source for this use case; ClearPass initiates the polling via the authentication source.

Therefore, the correct configuration step is: Create an Intune authentication source on CPPM (Option C).

Syslog Integration with CPPM:

ClearPass Policy Manager (CPPM) can integrate with third-party firewalls via Syslog messages to detect and respond to internal threats.

The Syslog integration enables CPPM to gather context on suspicious activity and enforce appropriate policies such as isolating attackers by working with network devices like Aruba switches and APs.

Option A: Correct. This method allows for dynamic response to threats and leverages existing infrastructure without requiring major reconfiguration.

Option B: Incorrect. CPDI is primarily used for profiling devices, not directly for threat response based on Syslog information.

Option C: Incorrect. While it is possible for CPPM to poll information, this approach is less dynamic and not focused on immediate threat response.

Option D: Incorrect. Tunnel mode SSIDs and UBT are designed for forwarding user traffic securely but do not directly enhance threat detection or mitigation.

When setting up a ClearPass cluster, it is critical to ensure secure communication between the cluster nodes and the client devices. For this purpose, certain certificates must be properly configured.

1. Why HTTPS Requires a CA-Signed Certificate?

HTTPS communication is used for inter-cluster communication and for the web-based user interface that administrators use to manage the ClearPass cluster.

Before joining the cluster, it is strongly recommended to install a CA-signed HTTPS certificate on the Subscriber to ensure secure communication and prevent warnings/errors due to untrusted certificates.

Without a CA-signed certificate, the Subscriber might use a self-signed certificate, leading to security risks and lack of trust validation.

2. Analysis of Other Certificate Types

B. Database:

Incorrect: Database communications within ClearPass clusters are secured using internal certificates or keys. These are not user-facing and do not require a CA-signed certificate before joining the cluster.

C. RADIUS/EAP:

Incorrect: RADIUS/EAP certificates are important for client authentication, but they are not required on the Subscriber prior to cluster joining. These can be configured after the Subscriber is part of the cluster.

D. RadSec:

Incorrect: RadSec is an optional feature for secure RADIUS communication over TLS, and its certificate configuration is typically performed post-cluster setup.

Final Recommendation

To ensure secure cluster operations and seamless web-based management, a CA-signed HTTPS certificate should be installed on the Subscriber before it joins the ClearPass cluster.

References

ClearPass Deployment Guide for Version 6.9.

Best Practices for Certificate Management in ClearPass Clusters.

HPE Aruba ClearPass Cluster Configuration Guide.

RADIUS Accounting:

RADIUS accounting enables network devices to report client session details (e.g., IP addresses, session duration, bandwidth usage) to CPPM.

Interim updates ensure CPPM receives ongoing updates about the client’s session, enabling accurate tracking.

Option Analysis:

Option A: Incorrect. Syslog logging sends general system logs, not client session details.

Option B: Incorrect. Dynamic authorization (CoA) handles session changes but does not provide usage tracking.

Option C: Correct. RADIUS accounting with interim updates tracks client IP addresses and bandwidth utilization.

Option D: Incorrect. IF-MAP interfaces are used for metadata sharing, not for RADIUS-based tracking.

To apply Virtual Network based Tunneling (VNBT) to a particular group of users and assign them to an overlay network with VNI 3000, you should configure the users' AOS-CX role to set the Access VLAN to the VLAN mapped to VNI 3000. This ensures that when users connect, their traffic is tunneled through the specified VNI, integrating seamlessly with the EVPN VXLAN solution.

1.Access VLAN Configuration: Setting the Access VLAN to the VLAN mapped to VNI 3000 ensures that users' traffic is directed to the correct virtual network.

2.EVPN VXLAN Integration: This setup allows the AOS-CX switch to participate in the EVPN VXLAN solution, ensuring that user traffic is properly encapsulated and tunneled.

3.Role-Based Assignment: Configuring the role with the correct VLAN mapping ensures that users are dynamically assigned to the appropriate virtual network based on their role.

Aruba firewall / role access rules are evaluated top-down, first-match wins; once a rule matches, no later rules are processed.

Let’s walk the packet through the ordered rules:

The traffic is SSH, not UDP/67 ⇒ rule 1 does not match.

Destination 10.1.7.12 is not in 10.1.4.0/23 ⇒ rule 2 does not match.

10.1.7.12 is in 10.1.0.0/18 ⇒ rule 3 matches first.

Rule 3 action: Deny any to 10.1.0.0/18 + log.

Because rule 3 already matched, the later “Deny SSH to 10.1.0.0/21 + denylist” rule is never evaluated, so no denylist is applied.

Aruba documentation for session ACLs and firewall rules explicitly states that rules are evaluated from top to bottom and “the first match terminates further evaluation,” and logging/denylist flags on a rule are applied only when that specific rule matches.

So the outcome is: the SSH traffic is dropped and logged, but the client is not denylisted → Option B.

In a client-to-site VPN based on tunnel-mode IPsec, the remote clients and a gateway at the main site are responsible for the IPsec encapsulation. The remote clients initiate the VPN connection and encapsulate their traffic in IPsec, which is then decapsulated by the gateway at the main site.

1.IPsec Encapsulation: The remote clients encapsulate their traffic using IPsec protocols before sending it over the internet to the main site.

2.Gateway Role: The gateway at the main site receives the encapsulated traffic, decapsulates it, and forwards it to the internal network. Similarly, traffic from the main site to the remote clients is encapsulated by the gateway and decapsulated by the clients.

3.Security: This setup ensures that data is securely transmitted between the remote clients and the main site, protecting it from eavesdropping and tampering.

To set up HPE Aruba Networking ClearPass Policy Manager (CPPM) to enforce certificate-based authentication for clients using Tunneled EAP (TEAP), you need to select an EAP-TLS-type authentication method for TEAP's inner method. TEAP allows for a combination of certificate-based (EAP-TLS) and password-based (EAP-MSCHAPv2) authentication. By choosing EAP-TLS as the inner method, you ensure that the clients are authenticated using their certificates, thus enforcing certificate-based authentication within the TEAP framework.

To control which commands managers are allowed to execute on AOS-CX switches using ClearPass Policy Manager (CPPM) as a TACACS+ server, you must configure the Shell service in the TACACS+ enforcement profile. The Shell service provides the ability to define granular access controls for commands. It supports policy-driven command authorization, which is essential in controlling administrative tasks based on roles.

References

Official HPE Aruba ClearPass documentation on TACACS+ integration and command authorization.

Industry best practices for AAA (Authentication, Authorization, and Accounting) configuration in network security architectures.

To support the requirement for HPE Aruba Networking ClearPass Policy Manager (CPPM) to have HTTP User-Agent strings for profiling devices, you should add the CPPM server's IP address to the IP helper list in all client VLANs on routing switches. This configuration ensures that DHCP requests and other relevant client traffic are forwarded to CPPM, allowing it to capture HTTP User-Agent strings and use them for device profiling.

1.IP Helper Configuration: Adding CPPM to the IP helper list ensures that the switch forwards DHCP and other client traffic to CPPM, enabling it to gather necessary information for profiling.

2.User-Agent Strings: By receiving client traffic, CPPM can analyze HTTP headers and capture User-Agent strings, which provide valuable information about the client's device and browser.

3.Profiling Support: This approach supports the comprehensive profiling of devices, allowing CPPM to apply appropriate policies based on detailed device information.

Policy Analysis:

Rule Evaluation Order: Rules are applied in sequential order until a match is found.

Key Points:

DHCP traffic (UDP 67) is permitted.

DNS traffic (UDP 53) is permitted.

Traffic to 10.5.5.0/24 is explicitly denied.

HTTP traffic (TCP 80) is allowed only to 10.5.0.0/16.

HTTPS traffic (TCP 443) is allowed only to 10.5.0.0/16.

All other traffic to 10.5.0.0/16 is denied.

Any other traffic not matching the above rules is permitted.

Scenario Analysis:

The client IP 10.2.2.2 does not fall within the 10.5.0.0/16 subnet.

Rule 3 denies traffic to 10.5.5.5, regardless of the source IP.

Option A: Correct. HTTPS traffic to 10.5.5.5 is explicitly denied by Rule 3.

Option B: Incorrect. Traffic to 203.0.113.12 is permitted due to the final "permit any" rule.

Option C: Incorrect. The client (10.2.2.2) does not belong to the subnet 10.5.0.0/16, so traffic to 10.5.3.3 is not permitted by Rule 5.

Option D: Incorrect. HTTP traffic to 198.51.100.12 is allowed by the last "permit any" rule.

Why MD5 Authentication on Lag 1 is Preferred:

Lag 1 is the primary link between Switch-2 and Switch-1, both of which are Layer 3 switches running OSPF.

By enabling MD5 authentication, OSPF routers exchange authenticated packets, preventing unauthorized or rogue OSPF routers from forming adjacencies or injecting routes.

MD5 is a secure authentication method and ensures the integrity and authenticity of OSPF communications.

Other Options Analysis:

A. Configure OSPF authentication on VLANs 10-19 in password mode: While configuring authentication on VLAN interfaces could secure VLAN-specific OSPF traffic, it is less effective because the main threat of rogue OSPF comes from unauthorized L3 devices connected via the backbone (Lag 1).

C. Disable OSPF entirely on VLANs 10-19: Disabling OSPF on these VLANs is not a preferred solution because OSPF is needed to route traffic in this design.

D. Configure passive-interface as the OSPF default and disable OSPF passive on Lag 1: While passive interfaces prevent OSPF from forming adjacencies, it does not directly prevent rogue routers. Passive mode only limits OSPF advertisements on specific interfaces.

When using OpenSSL to obtain a certificate signed by a Certification Authority (CA), you should submit the Certificate Signing Request (CSR) file, which is file1.pem, to the CA. The CSR contains the information about the entity requesting the certificate and the public key, but not the private key, which is in file2.pem. The CA uses the information in the CSR to create and sign the certificate.

1.CSR Submission: The CSR (file1.pem) includes the public key and the entity information required by the CA to issue a certificate.

2.Private Key Security: The private key (file2.pem) should never be sent to the CA or shared; it remains securely stored on the requestor’s server.

3.Certificate Issuance: After the CA signs the CSR, the resulting certificate can be used with the private key to establish secure communications.

To tunnel VoIP phone traffic from AOS-CX switches to an HPE Aruba Networking gateway, you need to configure a User-Based Tunneling (UBT) reserved VLAN on the switches. This VLAN is dedicated for tunneling purposes and ensures that the VoIP traffic is correctly identified and tunneled to the gateway where security policies can be applied.

1.UBT Configuration: Setting a UBT reserved VLAN ensures that the switch knows which VLAN to use for tunneling traffic to the gateway.

2.Traffic Tunneling: The reserved VLAN helps in segregating the VoIP traffic, ensuring it is handled securely and according to the configured policies at the gateway.

3.Policy Application: By tunneling the traffic, the gateway can apply advanced security policies to the VoIP traffic.

Wireshark: Follow TCP Stream:

Wireshark provides an intuitive feature to filter and display a complete TCP conversation.

By right-clicking any packet within the conversation and selecting "Follow → TCP Stream", Wireshark isolates and displays the entire conversation.

This feature allows you to view the communication in a simplified, sequential manner, including requests and responses.

Option Analysis:

Option A: Incorrect. Capture filters only apply during packet capturing, not for analyzing already saved packet captures.

Option B: Incorrect. Sorting packets helps with organizing data but does not isolate a complete conversation.

Option C: Incorrect. A capture filter for TCP port 5448 would have to be applied before capturing; it does not work for saved data.

Option D: Correct. Right-clicking a packet and choosing "Follow TCP Stream" is the simplest way to display the full conversation between 10.1.70.90 and 10.1.79.11 on port 5448.

Steps in Wireshark to Follow a TCP Stream:

Locate any packet within the desired conversation (e.g., between 10.1.70.90 and 10.1.79.11 on TCP port 5448).

Right-click on the packet.

Choose "Follow" → "TCP Stream".

Wireshark will display the entire TCP conversation, including both directions of communication.

This feature is especially useful when troubleshooting or analyzing detailed interactions between hosts.

Integrating HPE Aruba Networking ClearPass Policy Manager (CPPM) and HPE Aruba Networking ClearPass Device Insight (CPDI) can help a company implement Zero Trust Security by allowing CPDI to use tags to inform CPPM that clients are using prohibited applications. CPPM can then take action, such as telling the network infrastructure to quarantine those clients, ensuring that only compliant and trusted devices have network access.

1.Device Insight Tags: CPDI can monitor client behavior and tag devices that are using prohibited applications.

2.Policy Enforcement: CPPM can use these tags to apply specific enforcement actions, such as quarantining non-compliant devices.

3.Zero Trust Implementation: This integration supports Zero Trust Security by ensuring that all devices are continuously monitored and controlled based on their behavior and compliance with security policies.

In HPE Aruba Networking ClearPass Device Insight (CPDI), the clusters shown in the exhibit represent groups of unclassified devices that CPDI's machine learning algorithms have identified as having similar attributes. These clusters are formed based on observed characteristics and behaviors of the devices, helping administrators to categorize and manage devices more effectively.

1.Machine Learning: CPDI uses machine learning to analyze device attributes and group them into clusters based on similarities.

2.Unclassified Devices: These clusters typically represent devices that have not yet been explicitly classified by admins but share common attributes that suggest they belong to the same category.

3.Management: This clustering helps in simplifying the process of managing and applying policies to groups of similar devices.

802.1X Service Rules:

Service rules define the criteria for when a specific service applies (e.g., wireless vs. wired authentication).

For wired 802.1X authentication to work properly, the service rules need to differentiate between wireless and wired connections.

If you copy the wireless service, the rules likely still match wireless-specific criteria. These must be updated to include wired-specific conditions (e.g., NAS IP or port types).

Option Analysis:

Option A (Role mapping policy): Role mapping policies determine user roles based on attributes but are not critical for differentiating wired vs. wireless.

Option B (Authentication methods): Authentication methods (e.g., EAP) remain the same for both wireless and wired 802.1X.

Option C (Authentication source): Authentication sources (like AD or internal database) do not need to change.

Option D (Service rules): Correct. Updating the service rules ensures the new 802.1X service applies specifically to wired connections.

Subnet Scan Requirements for Profiling:

For ClearPass to scan and profile devices in a subnet, the Data Port must be enabled on the ClearPass server and connected to the network.

This ensures that ClearPass can send and receive the required packets for device discovery and profiling.

Option Analysis:

Option A: Incorrect. SSH accounts are not required for subnet scanning.

Option B: Incorrect. WMI probing is for Windows systems, not Linux devices.

Option C: Correct. The Data Port is essential for subnet scans and must be properly configured and connected.

Option D: Incorrect. SNMP is used for network device monitoring, not Linux device profiling.

Why a Mirror Session Is the Correct Choice

To analyze a wired client’s traffic with Wireshark, you need the traffic mirrored to your management station where Wireshark is installed. The most effective way to achieve this is by configuring a mirror session on the AOS-CX switch, specifying the client port as the source and your management station as the destination.

Analysis of Each Option

A. Access the client's switch's CLI from your management station. Access the switch shell and run a TCP dump on the client port:

Incorrect:

AOS-CX switches do not natively support packet capture (e.g., tcpdump) directly on the switch CLI.

This approach is not feasible for capturing and analyzing live client traffic.

B. Go to the client's switch in HPE Aruba Networking Central. Use the "Security" page to run a packet capture:

Incorrect:

HPE Aruba Networking Central provides security insights but does not directly support initiating packet captures for detailed analysis.

Traffic analysis with tools like Wireshark requires local packet capture at the management station.

C. Set up a policy that implements a captive portal redirect to your management station. Apply that policy to the client's port:

Incorrect:

Captive portals are designed for user authentication and redirection, not traffic analysis.

This would disrupt the client’s network activity without enabling traffic analysis in Wireshark.

D. Set up a mirror session on the client's switch; set the client port as the source and your station IP address as the tunnel destination:

Correct:

Mirroring the client port to your management station is the standard method for analyzing live network traffic with Wireshark.

Steps include:

Configure a mirror session on the client’s AOS-CX switch.

Set the client’s port as the source.

Set your management station as the destination using its IP address (via GRE tunnel or physical interface).

Start capturing traffic with Wireshark on the management station.

Final Recommendation

To analyze the client's traffic, configure a mirror session on the switch, set the client port as the source, and direct the traffic to your management station where Wireshark is running.

References

AOS-CX Switch Port Mirroring Configuration Guide.

HPE Aruba Networking Central Monitoring and Troubleshooting Best Practices.

Wireshark Traffic Analysis and Capture Techniques.

When establishing a cluster of HPE Aruba Networking ClearPass servers, it is recommended to install a CA-signed certificate for HTTPS on the Subscriber before it joins the cluster. This ensures secure communication between the servers in the cluster and provides a trusted certificate for client connections.

1.HTTPS Security: A CA-signed certificate for HTTPS ensures that all web-based communication to and from the ClearPass server is encrypted and secure.

2.Cluster Communication: Secure communication between ClearPass nodes in the cluster is essential for synchronization and data integrity.

3.Client Trust: Clients accessing the ClearPass server will trust the CA-signed certificate, avoiding security warnings and ensuring smooth operations.

ClearPass Device Profiler gathers information (DHCP, HTTP user-agent, MAC OUI, RADIUS, etc.) to identify device types and roles—especially non-user devices. Aruba documentation describes using profiling to recognize and categorize devices such as IP cameras, printers, and IoT “bots”, and to supply this identity context to access control policies. ExamTopics

Typical use cases include:

Automatically identifying a device as a security camera, printer, IP phone, etc.

Using that profile to assign an appropriate role/VLAN and enforcement profile in CPPM (e.g., restricted video-surveillance VLAN).

ClearPass literature explicitly calls out that Device Profiler is used to “automatically profile devices and provide an identity context (such as cameras, printers, or bots)” that can be used in policy decisions.

Options B, C, and D are handled by vulnerability scanners, directory services, or posture/OnGuard, not by Device Profiler itself. Therefore the correct use case is Option A.

When integrating ClearPass Policy Manager (CPPM) with ClearPass Device Insight (CPDI), it is important to understand how device profiling and classification work between the two solutions:

1. CPPM and CPDI Integration Overview

CPPM is primarily used for access control and policy enforcement, while CPDI specializes in device profiling and classification through advanced analytics and machine learning.

Integration allows CPPM to leverage CPDI's enhanced profiling capabilities for more accurate device identification and policy enforcement.

2. Detailed Analysis of Each Option

A. CPPM no longer supports any Device Profiler features and relies on CPDI for this profile information:

Incorrect: CPPM still supports its own basic device profiling features and can operate independently. However, when integrated with CPDI, CPPM can use CPDI’s advanced profiling capabilities as a supplement.

B. CPDI must be configured as an audit server on CPPM for the integration to be successful:

Incorrect: CPDI is not configured as an audit server on CPPM. Integration is achieved via API integration and communication between the two solutions, not through audit server settings.

C. CPDI must have security analysis disabled on it for the integration to be successful:

Incorrect: Security analysis does not need to be disabled for integration. In fact, CPDI’s security analysis enhances the classification process by identifying anomalous behaviors.

D. CPPM can submit profile information to CPDI, but if CPDI derives a different classification, CPDI takes precedence:

Correct:

CPPM and CPDI exchange profile data, but CPDI has more advanced device classification capabilities due to its machine learning-based engine.

When CPDI derives a different classification than CPPM, CPDI's classification is considered more accurate and takes precedence.

This ensures that policies are based on the most reliable device classification.

References

Aruba ClearPass Policy Manager and Device Insight Integration Guide.

ClearPass Device Profiling and Classification Documentation.

Best Practices for CPPM and CPDI Integration in Network Security.

Integration of CPDI and CPPM for Zero Trust:

CPDI (ClearPass Device Insight) identifies and profiles devices and applications on the network.

CPDI can tag devices based on their behavior or detected applications.

CPPM uses these tags to enforce policies, such as quarantining clients that violate security rules (e.g., using prohibited applications).

Option Analysis:

Option A: Incorrect. CPPM does not inform CPDI about role assignments; CPDI provides device context to CPPM.

Option B: Correct. CPDI tags clients, and CPPM uses those tags to enforce quarantine or other Zero Trust actions.

Option C: Incorrect. Custom fingerprint definitions are not part of this integration.

Option D: Incorrect. CPDI provides information about devices, not user identities.