HPE6-A84 Free Dumps and Practice Exam

Jonnie Karnath2023-10-24T07:17:18+00:00

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1. Refer to the scenario.

A customer requires these rights for clients in the “medical-mobile” AOS firewall role on Aruba Mobility Controllers (MCs):

Permitted to receive IP addresses with DHCP

Permitted access to DNS services from 10.8.9.7 and no other server

Permitted access to all subnets in the 10.1.0.0/16 range except denied access to 10.1.12.0/22

Denied access to other 10.0.0.0/8 subnets

Permitted access to the Internet

Denied access to the WLAN for a period of time if they send any SSH traffic

Denied access to the WLAN for a period of time if they send any Telnet traffic

Denied access to all high-risk websites

External devices should not be permitted to initiate sessions with “medical-mobile” clients, only send return traffic.

The exhibits below show the configuration for the role.

There are multiple issues with this configuration.

What is one change you must make to meet the scenario requirements? (In the options, rules in a policy are referenced from top to bottom. For example, “medical-mobile” rule 1 is “ipv4 any any svc-dhcp permit,” and rule 8 is “ipv4 any any any permit”.)

In the “medical-mobile” policy, move rules 2 and 3 between rules 7 and 8.

In the “medical-mobile” policy, change the subnet mask in rule 3 to 255.255.248.0.

Move the rule in the “apprf-medical-mobile-sacl” policy between rules 7 and 8 in the “medical-mobile” policy.

In the “medical-mobile” policy, change the source in rule 8 to “user.”

2. Refer to the scenario.

# Introduction to the customer

You are helping a company add Aruba ClearPass to their network, which uses Aruba network infrastructure devices.

The company currently has a Windows domain and Windows CA. The Window CA issues certificates to domain computers, domain users, and servers such as domain controllers. An example of a certificate issued by the Windows CA is shown here.

The company is in the process of adding Microsoft Endpoint Manager (Intune) to manage its mobile clients. The customer is maintaining the on-prem AD for now and uses Azure AD Connect to sync with Azure AD.

# Requirements for issuing certificates to mobile clients

The company wants to use ClearPass Onboard to deploy certificates automatically to mobile clients enrolled in Intune. During this process, Onboard should communicate with Azure AD to validate the clients. High availability should also be provided for this scenario; in other words, clients should be able to get certificates from Subscriber 2 if Subscriber 1 is down.

The Intune admins intend to create certificate profiles that include a UPN SAN with the UPN of the user who enrolled the device.

# Requirements for authenticating clients

The customer requires all types of clients to connect and authenticate on the same corporate SSID.

The company wants CPPM to use these authentication methods:

EAP-TLS to authenticate users on mobile clients registered in Intune

TEAR, with EAP-TLS as the inner method to authenticate Windows domain computers and the users on them

To succeed, EAP-TLS (standalone or as a TEAP method) clients must meet these requirements:

Their certificate is valid and is not revoked, as validated by OCSP

The client’s username matches an account in AD

# Requirements for assigning clients to roles

After authentication, the customer wants the CPPM to assign clients to ClearPass roles based on the following rules:

Clients with certificates issued by Onboard are assigned the “mobile-onboarded” role

Clients that have passed TEAP Method 1 are assigned the “domain-computer” role

Clients in the AD group “Medical” are assigned the “medical-staff” role

Clients in the AD group “Reception” are assigned to the “reception-staff” role

The customer requires CPPM to assign authenticated clients to AOS firewall roles as follows:

Assign medical staff on mobile-onboarded clients to the “medical-mobile” firewall role

Assign other mobile-onboarded clients to the “mobile-other” firewall role

Assign medical staff on domain computers to the “medical-domain” firewall role

All reception staff on domain computers to the “reception-domain” firewall role

All domain computers with no valid user logged in to the “computer-only” firewall role

Deny other clients access -

# Other requirements

Communications between ClearPass servers and on-prem AD domain controllers must be encrypted.

# Network topology

For the network infrastructure, this customer has Aruba APs and Aruba gateways, which are managed by Central. APs use tunneled WLANs, which tunnel traffic to the gateway cluster. The customer also has AOS-CX switches that are not managed by Central at this point.

# ClearPass cluster IP addressing and hostnames

A customer’s ClearPass cluster has these IP addresses:

Publisher = 10.47.47.5 -

Subscriber 1 = 10.47.47.6 -

Subscriber 2 = 10.47.47.7 -

Virtual IP with Subscriber 1 and Subscriber 2 = 10.47.47.8

The customer’s DNS server has these entries

cp.acnsxtest.com = 10.47.47.5

cps1.acnsxtest.com = 10.47.47.6

cps2.acnsxtest.com = 10.47.47.7

radius.acnsxtest.com = 10.47.47.8

onboard.acnsxtest.com = 10.47.47.8

The customer has now decided that it needs CPPM to assign certain mobile-onboarded devices to a “nurse-call” AOS user role. These are mobile-onboarded devices that are communicating with IP address 10.1.18.12 using port 4343.

What are the prerequisites for fulfilling this requirement?

Setting up traffic classes and role mapping rules within Central’s global settings

Creating server-based role assignment rules on APs that apply roles to clients based on traffic destinations

Creating server-based role assignment rules on gateways that apply roles to clients based on traffic destinations

Creating a tag on Central to select the proper destination connection and integrating CPPM with Device Insight

3. 1.You are designing an Aruba ClearPass Policy Manager (CPPM) solution for a customer. You learn that the customer has a Palo Alto firewall that filters traffic between clients in the campus and the data center.

Which integration can you suggest?

Sending Syslogs from the firewall to CPPM to signal CPPM to change the authentication status for misbehaving clients

Importing clients’ MAC addresses to configure known clients for MAC authentication more quickly

Establishing a double layer of authentication at both the campus edge and the data center DMZ

Importing the firewall's rules to program downloadable user roles for AOS-CX switches more quickly

4. Refer to the scenario.

# Introduction to the customer

You are helping a company add Aruba ClearPass to their network, which uses Aruba network infrastructure devices.

The company currently has a Windows domain and Windows CA. The Window CA issues certificates to domain computers, domain users, and servers such as domain controllers. An example of a certificate issued by the Windows CA is shown here.

# ClearPass cluster IP addressing and hostnames

A customer’s ClearPass cluster has these IP addresses:

Publisher = 10.47.47.5 -

Subscriber 1 = 10.47.47.6 -

Subscriber 2 = 10.47.47.7 -

Virtual IP with Subscriber 1 and Subscriber 2 = 10.47.47.8

The customer’s DNS server has these entries

cp.acnsxtest.com = 10.47.47.5

cps1.acnsxtest.com = 10.47.47.6

cps2.acnsxtest.com = 10.47.47.7

radius.acnsxtest.com = 10.47.47.8

onboard.acnsxtest.com = 10.47.47.8

On CPPM, you are creating the authentication method shown in the exhibit below:

You will use the method for standalone EAP-TLS and for inner methods in TEAP.

What should you do?

Configure OCSP override and set the OCSP URL to localhost/onboard/mdps_ocsp.php/2

Enable certificate comparison.

Enable authorization.

Configure OCSP override and leave the OCSP URL blank.

5. Refer to the scenario.

This customer is enforcing 802.1X on AOS-CX switches to Aruba ClearPass Policy Manager (CPPM). The customer wants switches to download role settings from CPPM.

The “reception-domain” role must have these settings:

― Assigns clients to VLAN 14 on switch 1, VLAN 24 on switch 2, and so on.

― Filters client traffic as follows:

― Clients are permitted full access to 10.1.5.0/24 and the Internet

― Clients are denied access to 10.1.0.0/16

The switch topology is shown here:

How should you configure the VLAN setting for the reception role?

Assign a consistent name to VLAN 14, 24, or 34 on each access layer switch and reference that name in the enforcement profile VLAN settings.

Configure the enforcement profile as a downloadable role, but specify only the role name and leave the VLAN undefined. Then define a “reception” role with the correct VLAN setting on each individual access layer switch.

Assign a number-based ID to the access layer switches. Then use this variable in the enforcement profile VLAN settings: %(NAS-ID}4.

Create a separate enforcement profile with a different VLAN ID for each switch. Add all profiles to the profile list in the appropriate enforcement policy rule.

6. Refer to the scenario.

A customer is using an AOS 10 architecture with Aruba APs and Aruba gateways (two per site). Admins have implemented auto-site clustering for gateways with the default gateway mode disabled. WLANs use tunneled mode to the gateways.

The WLAN security is WPA3-Enterprise with authentication to an Aruba ClearPass Policy Manager (CPPM) cluster VIP. RADIUS communications use RADIUS, not RadSec.

CPPM is using the service shown in the exhibits.

Which step can you take to improve operations during a possible gateway failover event?

Change the WLANs to mixed-mode forwarding so that you can select multiple gateway clusters.

Set up gateway clusters manually and set VRRP IP addresses for dynamic authorization.

Use auto-group clustering instead of auto-site clustering for the gateways.

Enable default gateway mode for the gateway clusters.

7. A customer has an AOS 10 architecture, which includes Aruba APs. Admins have recently enabled WIDS at the high level.

They also enabled alerts and email notifications for several events, as shown in the exhibit.

Admins are complaining that they are getting so many emails that they have to ignore them, so they are going to turn off all notifications.

What is one step you could recommend trying first?

Send the email notifications directly to a specific folder, and only check the folder once a week.

Disable email notifications for Rogue AP, but leave the Infrastructure Attack Detected and Client Attack Detected notifications on.

Change the WIDS level to custom, and enable only the checks most likely to indicate real threats.

Disable just the Rogue AP and Client Attack Detected alerts, as they overlap with the Infrastructure Attack Detected alert.

8. What is a common characteristic of a beacon between a compromised device and a command and control server?

Use of IPv6 addressing instead of IPv4 addressing

Lack of encryption

Use of less common protocols such as SNAP

Periodic transmission of small, identically sized packets

9. Refer to the scenario.

# Introduction to the customer

You are helping a company add Aruba ClearPass to their network, which uses Aruba network infrastructure devices.

The company currently has a Windows domain and Windows CA. The Window CA issues certificates to domain computers, domain users, and servers such as domain controllers. An example of a certificate issued by the Windows CA is shown here.

# ClearPass cluster IP addressing and hostnames

A customer’s ClearPass cluster has these IP addresses:

Publisher = 10.47.47.5 -

Subscriber 1 = 10.47.47.6 -

Subscriber 2 = 10.47.47.7 -

Virtual IP with Subscriber 1 and Subscriber 2 = 10.47.47.8

The customer’s DNS server has these entries

cp.acnsxtest.com = 10.47.47.5

cps1.acnsxtest.com = 10.47.47.6

cps2.acnsxtest.com = 10.47.47.7

radius.acnsxtest.com = 10.47.47.8

onboard.acnsxtest.com = 10.47.47.8

You have started to create a CA to meet the customer’s requirements for issuing certificates to mobile clients, as shown in the exhibit below.

What change will help to meet those requirements and the requirements for authenticating clients?

Change the EST authentication method to use an external validator.

Change the EST Digest Algorithm to SHA-512.

Recreate the CA as a registration authority under Azure A

Specify an OCSP responder, setting the hostname to localhost.

10. Refer to the exhibit.

You have been given this certificate to install on a ClearPass server for the RADIUS/EAP and RadSec usages.

What is one issue?

The certificate has a wildcard in the subject common name.

The certificate uses a fully qualified the “.local” domain name.

The certificate does not have a URI subject alternative name (SAN).

The certificate does not have an IP subject alternative name (SAN).

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11. You are reviewing an endpoint entry in ClearPass Policy Manager (CPPM) Endpoints Repository.

What is a good sign that someone has been trying to gain unauthorized access to the network?

The entry shows multiple DHCP options under the fingerprints.

The entry shows an Unknown status.

The entry shows a profile conflict of having a new profile of Computer for a profiled Printer.

The entry lacks a hostname or includes a hostname with long seemingly random characters.

12. Refer to the scenario.

An organization wants the AOS-CX switch to trigger an alert if its RADIUS server (cp.acnsxtest.local) rejects an unusual number of client authentication requests per hour. After some discussions with other Aruba admins, you are still not sure how many rejections are usual or unusual. You expect that the value could be different on each switch.

You are helping the developer understand how to develop an NAE script for this use case.

You are helping a customer define an NAE script for AOS-CX switches. The script will monitor statistics from a RADIUS server defined on the switch. You want to future proof the script by enabling admins to select a different hostname or IP address for the monitored RADIUS server when they create an agent from the script.

What should you recommend?

Use this variable, %{radius-ip}, when defining the monitor URI in the NAE agent script.

Define a parameter for the RADIUS server; reference that parameter instead of the server name/ip when defining the monitor UR

Use a callback action to collect the name of any RADIUS servers defined on the switch at the time the agent is created.

Make the script editable so that admins can edit it on demand when they are creating scripts.

13. A customer wants CPPM to authenticate non-802.1X-capable devices.

An admin has created the service shown in the exhibits below:

What is one recommendation to improve security?

Adding an enforcement policy rule that denies access to endpoints with the Conflict flag

Using Active Directory as the authentication source

Creating and using a custom MAC-Auth authentication method

Enabling caching of posture and roles

14. Refer to the exhibit.

Aruba ClearPass Policy Manager (CPPM) is using the settings shown in the exhibit. You reference the tag shown in the exhibit in enforcement policies related to NASes of several types, including Aruba APs, Aruba gateways, and AOS-CX switches.

What should you do to ensure that clients are reclassified and receive the correct treatment based on the tag?

Change the RADIUS action to [Aruba Wireless C Terminate Session] which is supported by all the NASes in question.

Change the RADIUS action to [Aruba Wireless C Bounce Switch Port] which is supported by all the NASes in question.

Enable profiling in each service using one of these enforcement profiles. Set the profiling action to the correct one for the NASes using that service.

Set the Tags Update Action to No Action. Then instead enable the RADIUS CoAs using enforcement profiles in the rules that match clients with the tag shown in the exhibit.

15. Refer to the scenario.

A customer requires these rights for clients in the “medical-mobile” AOS firewall role on Aruba Mobility Controllers (MCs):

Permitted to receive IP addresses with DHCP

Permitted access to DNS services from 10.8.9.7 and no other server

Permitted access to all subnets in the 10.1.0.0/16 range except denied access to 10.1.12.0/22

Denied access to other 10.0.0.0/8 subnets

Permitted access to the Internet

Denied access to the WLAN for a period of time if they send any SSH traffic

Denied access to the WLAN for a period of time if they send any Telnet traffic

Denied access to all high-risk websites

External devices should not be permitted to initiate sessions with “medical-mobile” clients, only send return traffic.

The line below shows the effective configuration for the role.

Apply the “apprf-medical-mobile-sacl" policy explicitly to the “medical-mobile” user-role under the “medical-mobile” policy.

In the “medical-mobile” policy, change the action for rules 2 and 3 to reject.

In the “medical-mobile” policy, move rule 5 under rule 6.

In the “medical-mobile” policy, change the subnet mask in rule 5 to 255.255.252.0.

16. You are configuring gateway IDS/IPS settings in Aruba Central.

For which reason would you set the Fail Strategy to Bypass?

To permit traffic if the IPS engine falls to inspect It

To enable the gateway to honor the allowlist settings configured in IDS/IPS policies

To tell gateways to stop enforcing IDS/IPS policies if they lose connectivity to the Internet

To avoid wasting IPS engine resources on filtering traffic for unauthenticated clients

17. Refer to the exhibit.

Which security issue is possibly indicated by this traffic capture?

An attempt at a DoS attack by a device acting as an unauthorized DNS server

A port scan being run on the 10.1.7.0/24 subnet

A command and control channel established with DNS tunneling

An ARP poisoning or man-in-the-middle attempt by the device at 94:60:d5:bf:36:40

18. Refer to the scenario.

A customer is migrating from on-prem AD to Azure AD as its sole domain solution. The customer also manages both wired and wireless devices with Microsoft Endpoint Manager (Intune).

The customer wants to improve security for the network edge. You are helping the customer design a ClearPass deployment for this purpose. Aruba network devices will authenticate wireless and wired clients to an Aruba ClearPass Policy Manager (CPPM) cluster (which uses version 6.10).

The customer has several requirements for authentication. The clients should only pass EAP-TLS authentication if a query to Azure AD shows that they have accounts in Azure AD. To further refine the clients’ privileges, ClearPass also should use information collected by Intune to make access control decisions.

You are planning to use Azure AD as the authentication source in 802.1X services.

What should you make sure that the customer understands is required?

An app registration on Azure AD that references the CPPM's FQDN

Windows 365 subscriptions

CPPM's RADIUS certificate was imported as trusted in the Azure AD directory

Azure AD Domain Services

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